diff --git a/DiscordChatExporter.Gui/App.xaml b/DiscordChatExporter.Gui/App.xaml
index c945d4d..7d44e5f 100644
--- a/DiscordChatExporter.Gui/App.xaml
+++ b/DiscordChatExporter.Gui/App.xaml
@@ -14,69 +14,13 @@
 
             <!--  Merged dictionaries  -->
             <ResourceDictionary.MergedDictionaries>
-                <ResourceDictionary Source="pack://application:,,,/MaterialDesignThemes.Wpf;component/Themes/MaterialDesignTheme.Light.xaml" />
+                <materialDesign:BundledTheme
+                    BaseTheme="Light"
+                    PrimaryColor="Blue"
+                    SecondaryColor="Blue" />
                 <ResourceDictionary Source="pack://application:,,,/MaterialDesignThemes.Wpf;component/Themes/MaterialDesignTheme.Defaults.xaml" />
             </ResourceDictionary.MergedDictionaries>
 
-            <!--  Colors  -->
-            <Color x:Key="PrimaryColor">#343838</Color>
-            <Color x:Key="PrimaryLightColor">#5E6262</Color>
-            <Color x:Key="PrimaryDarkColor">#0D1212</Color>
-            <Color x:Key="AccentColor">#F9A825</Color>
-            <Color x:Key="AccentDarkColor">#C17900</Color>
-            <Color x:Key="TextColor">#000000</Color>
-            <Color x:Key="InverseTextColor">#FFFFFF</Color>
-
-            <SolidColorBrush x:Key="PrimaryHueLightBrush" Color="{DynamicResource PrimaryLightColor}" />
-            <SolidColorBrush x:Key="PrimaryHueLightForegroundBrush" Color="{DynamicResource InverseTextColor}" />
-            <SolidColorBrush x:Key="PrimaryHueMidBrush" Color="{DynamicResource PrimaryColor}" />
-            <SolidColorBrush x:Key="PrimaryHueMidForegroundBrush" Color="{DynamicResource InverseTextColor}" />
-            <SolidColorBrush x:Key="PrimaryHueDarkBrush" Color="{DynamicResource PrimaryDarkColor}" />
-            <SolidColorBrush x:Key="PrimaryHueDarkForegroundBrush" Color="{DynamicResource InverseTextColor}" />
-            <SolidColorBrush x:Key="SecondaryAccentBrush" Color="{DynamicResource AccentColor}" />
-            <SolidColorBrush x:Key="SecondaryAccentForegroundBrush" Color="{DynamicResource TextColor}" />
-
-            <SolidColorBrush
-                x:Key="PrimaryTextBrush"
-                Opacity="0.87"
-                Color="{DynamicResource TextColor}" />
-            <SolidColorBrush
-                x:Key="SecondaryTextBrush"
-                Opacity="0.64"
-                Color="{DynamicResource TextColor}" />
-            <SolidColorBrush
-                x:Key="DimTextBrush"
-                Opacity="0.45"
-                Color="{DynamicResource TextColor}" />
-            <SolidColorBrush
-                x:Key="PrimaryInverseTextBrush"
-                Opacity="1"
-                Color="{DynamicResource InverseTextColor}" />
-            <SolidColorBrush
-                x:Key="SecondaryInverseTextBrush"
-                Opacity="0.7"
-                Color="{DynamicResource InverseTextColor}" />
-            <SolidColorBrush
-                x:Key="DimInverseTextBrush"
-                Opacity="0.52"
-                Color="{DynamicResource InverseTextColor}" />
-            <SolidColorBrush
-                x:Key="AccentTextBrush"
-                Opacity="1"
-                Color="{DynamicResource AccentColor}" />
-            <SolidColorBrush
-                x:Key="AccentDarkTextBrush"
-                Opacity="1"
-                Color="{DynamicResource AccentDarkColor}" />
-            <SolidColorBrush
-                x:Key="DividerBrush"
-                Opacity="0.12"
-                Color="{DynamicResource TextColor}" />
-            <SolidColorBrush
-                x:Key="InverseDividerBrush"
-                Opacity="0.12"
-                Color="{DynamicResource InverseTextColor}" />
-
             <!--  Styles  -->
             <Style x:Key="MaterialDesignRoot" TargetType="{x:Type Control}">
                 <Setter Property="FontFamily" Value="{DynamicResource MaterialDesignFont}" />
@@ -84,7 +28,7 @@
                 <Setter Property="SnapsToDevicePixels" Value="True" />
                 <Setter Property="TextElement.FontSize" Value="13" />
                 <Setter Property="TextElement.FontWeight" Value="Regular" />
-                <Setter Property="TextElement.Foreground" Value="{DynamicResource SecondaryTextBrush}" />
+                <Setter Property="TextElement.Foreground" Value="{DynamicResource MaterialDesignBody}" />
                 <Setter Property="TextOptions.TextFormattingMode" Value="Ideal" />
                 <Setter Property="TextOptions.TextRenderingMode" Value="Auto" />
                 <Setter Property="UseLayoutRounding" Value="True" />
@@ -94,27 +38,20 @@
 
             <Style BasedOn="{StaticResource MaterialDesignLinearProgressBar}" TargetType="{x:Type ProgressBar}">
                 <Setter Property="BorderThickness" Value="0" />
+                <Setter Property="Background" Value="Transparent" />
                 <Setter Property="Foreground" Value="{DynamicResource SecondaryAccentBrush}" />
                 <Setter Property="Height" Value="2" />
                 <Setter Property="Maximum" Value="1" />
                 <Setter Property="Minimum" Value="0" />
             </Style>
 
-            <Style BasedOn="{StaticResource MaterialDesignTextBox}" TargetType="{x:Type TextBox}">
-                <Setter Property="Foreground" Value="{DynamicResource PrimaryTextBrush}" />
-            </Style>
+            <Style BasedOn="{StaticResource MaterialDesignTextBox}" TargetType="{x:Type TextBox}" />
 
-            <Style BasedOn="{StaticResource MaterialDesignComboBox}" TargetType="{x:Type ComboBox}">
-                <Setter Property="Foreground" Value="{DynamicResource PrimaryTextBrush}" />
-            </Style>
+            <Style BasedOn="{StaticResource MaterialDesignComboBox}" TargetType="{x:Type ComboBox}" />
 
-            <Style BasedOn="{StaticResource MaterialDesignDatePicker}" TargetType="{x:Type DatePicker}">
-                <Setter Property="Foreground" Value="{DynamicResource PrimaryTextBrush}" />
-            </Style>
+            <Style BasedOn="{StaticResource MaterialDesignDatePicker}" TargetType="{x:Type DatePicker}" />
 
-            <Style BasedOn="{StaticResource MaterialDesignTimePicker}" TargetType="{x:Type materialDesign:TimePicker}">
-                <Setter Property="Foreground" Value="{DynamicResource PrimaryTextBrush}" />
-            </Style>
+            <Style BasedOn="{StaticResource MaterialDesignTimePicker}" TargetType="{x:Type materialDesign:TimePicker}" />
 
             <Style
                 x:Key="MaterialDesignFlatDarkButton"
diff --git a/DiscordChatExporter.Gui/Services/SettingsService.cs b/DiscordChatExporter.Gui/Services/SettingsService.cs
index b26133b..000fc7e 100644
--- a/DiscordChatExporter.Gui/Services/SettingsService.cs
+++ b/DiscordChatExporter.Gui/Services/SettingsService.cs
@@ -12,6 +12,8 @@ namespace DiscordChatExporter.Gui.Services
 
         public bool IsTokenPersisted { get; set; } = true;
 
+        public bool IsDarkThemeEnabled { get; set; } = false;
+
         public int ParallelLimit { get; set; } = 1;
 
         public AuthToken? LastToken { get; set; }
diff --git a/DiscordChatExporter.Gui/Theme.cs b/DiscordChatExporter.Gui/Theme.cs
new file mode 100644
index 0000000..df80ada
--- /dev/null
+++ b/DiscordChatExporter.Gui/Theme.cs
@@ -0,0 +1,42 @@
+using MaterialDesignThemes.Wpf;
+using System.Windows.Media;
+
+namespace DiscordChatExporter.Gui
+{
+    public sealed class Theme
+    {
+        public static Theme Light { get; } = new Theme(new MaterialDesignLightTheme(), HexToColor.Convert("#343838"), HexToColor.Convert("#F9A825"));
+        public static Theme Dark { get; } = new Theme(new MaterialDesignDarkTheme(), HexToColor.Convert("#E8E8E8"), HexToColor.Convert("#F9A825"));
+
+        public static void SetCurrent(Theme theme)
+        {
+            var paletteHelper = new PaletteHelper();
+
+            var materialTheme = paletteHelper.GetTheme();
+            materialTheme.SetBaseTheme(theme.BaseTheme);
+            materialTheme.SetPrimaryColor(theme.PrimaryColor);
+            materialTheme.SetSecondaryColor(theme.SecondaryColor);
+
+            paletteHelper.SetTheme(materialTheme);
+        }
+
+        public Theme(IBaseTheme baseTheme, Color primaryColor, Color secondaryColor)
+        {
+            BaseTheme = baseTheme;
+            PrimaryColor = primaryColor;
+            SecondaryColor = secondaryColor;
+        }
+
+        public IBaseTheme BaseTheme { get; }
+        public Color PrimaryColor { get; }
+        public Color SecondaryColor { get; }
+
+        class HexToColor
+        {
+            public static Color Convert(string hex)
+            {
+                return (Color)ColorConverter.ConvertFromString(hex);
+            }
+        }
+    }
+}
diff --git a/DiscordChatExporter.Gui/ViewModels/Dialogs/SettingsViewModel.cs b/DiscordChatExporter.Gui/ViewModels/Dialogs/SettingsViewModel.cs
index a608818..2f71ec2 100644
--- a/DiscordChatExporter.Gui/ViewModels/Dialogs/SettingsViewModel.cs
+++ b/DiscordChatExporter.Gui/ViewModels/Dialogs/SettingsViewModel.cs
@@ -26,6 +26,12 @@ namespace DiscordChatExporter.Gui.ViewModels.Dialogs
             set => _settingsService.IsTokenPersisted = value;
         }
 
+        public bool IsDarkThemeEnabled
+        {
+            get => _settingsService.IsDarkThemeEnabled;
+            set => _settingsService.IsDarkThemeEnabled = value;
+        }
+
         public int ParallelLimit
         {
             get => _settingsService.ParallelLimit;
diff --git a/DiscordChatExporter.Gui/ViewModels/RootViewModel.cs b/DiscordChatExporter.Gui/ViewModels/RootViewModel.cs
index ff18508..8038048 100644
--- a/DiscordChatExporter.Gui/ViewModels/RootViewModel.cs
+++ b/DiscordChatExporter.Gui/ViewModels/RootViewModel.cs
@@ -107,6 +107,8 @@ namespace DiscordChatExporter.Gui.ViewModels
                 IsBotToken = _settingsService.LastToken.Type == AuthTokenType.Bot;
                 TokenValue = _settingsService.LastToken.Value;
             }
+            
+            Theme.SetCurrent(_settingsService.IsDarkThemeEnabled ? Theme.Dark : Theme.Light);
 
             await HandleAutoUpdateAsync();
         }
diff --git a/DiscordChatExporter.Gui/Views/Dialogs/ExportSetupView.xaml b/DiscordChatExporter.Gui/Views/Dialogs/ExportSetupView.xaml
index 9e795f9..a3470f8 100644
--- a/DiscordChatExporter.Gui/Views/Dialogs/ExportSetupView.xaml
+++ b/DiscordChatExporter.Gui/Views/Dialogs/ExportSetupView.xaml
@@ -48,12 +48,13 @@
                 Margin="8,0,0,0"
                 VerticalAlignment="Center"
                 FontSize="19"
+                FontWeight="Light"
                 TextTrimming="CharacterEllipsis"
                 Visibility="{Binding IsSingleChannel, Converter={x:Static s:BoolToVisibilityConverter.Instance}}">
                 <Run Text="{Binding Channels[0].Category, Mode=OneWay}" ToolTip="{Binding Channels[0].Category, Mode=OneWay}" />
                 <Run Text="/" />
                 <Run
-                    Foreground="{DynamicResource PrimaryTextBrush}"
+                    FontWeight="DemiBold"
                     Text="{Binding Channels[0].Name, Mode=OneWay}"
                     ToolTip="{Binding Channels[0].Name, Mode=OneWay}" />
             </TextBlock>
@@ -163,18 +164,13 @@
             <ToggleButton
                 x:Name="AdvancedSectionToggleButton"
                 Grid.Column="0"
-                Margin="8"
+                Width="24"
+                Height="24"
+                Margin="12"
                 Cursor="Hand"
                 Loaded="AdvancedSectionToggleButton_OnLoaded"
-                Style="{DynamicResource MaterialDesignFlatToggleButton}"
-                ToolTip="Show advanced options">
-                <ToggleButton.Content>
-                    <materialDesign:PackIcon
-                        Width="24"
-                        Height="24"
-                        Kind="Menu" />
-                </ToggleButton.Content>
-            </ToggleButton>
+                Style="{DynamicResource MaterialDesignHamburgerToggleButton}"
+                ToolTip="Show advanced options" />
 
             <Button
                 Grid.Column="2"
diff --git a/DiscordChatExporter.Gui/Views/Dialogs/SettingsView.xaml b/DiscordChatExporter.Gui/Views/Dialogs/SettingsView.xaml
index 1ce646f..cb9e5b5 100644
--- a/DiscordChatExporter.Gui/Views/Dialogs/SettingsView.xaml
+++ b/DiscordChatExporter.Gui/Views/Dialogs/SettingsView.xaml
@@ -15,7 +15,6 @@
         <TextBlock
             Margin="16"
             FontSize="17"
-            Foreground="{DynamicResource PrimaryTextBrush}"
             Text="Settings" />
 
         <!--  Date format  -->
@@ -56,11 +55,28 @@
                 IsChecked="{Binding IsTokenPersisted}" />
         </DockPanel>
 
+        <!--  Dark/Light theme  -->
+        <DockPanel
+            Background="Transparent"
+            LastChildFill="False"
+            ToolTip="Persist last used token between sessions">
+            <TextBlock
+                Margin="16,8"
+                DockPanel.Dock="Left"
+                Text="Dark theme" />
+            <ToggleButton
+                Margin="16,8"
+                Checked="ToggleButton_Checked"
+                DockPanel.Dock="Right"
+                IsChecked="{Binding IsDarkThemeEnabled}"
+                Unchecked="ToggleButton_Unchecked" />
+        </DockPanel>
+
         <!--  Parallel limit  -->
         <StackPanel Background="Transparent" ToolTip="How many channels can be exported at the same time">
             <TextBlock Margin="16,8">
                 <Run Text="Parallel limit:" />
-                <Run Foreground="{DynamicResource PrimaryTextBrush}" Text="{Binding ParallelLimit, Mode=OneWay}" />
+                <Run Text="{Binding ParallelLimit, Mode=OneWay}" />
             </TextBlock>
             <Slider
                 Margin="16,8"
diff --git a/DiscordChatExporter.Gui/Views/Dialogs/SettingsView.xaml.cs b/DiscordChatExporter.Gui/Views/Dialogs/SettingsView.xaml.cs
index 1ba7491..b5d7081 100644
--- a/DiscordChatExporter.Gui/Views/Dialogs/SettingsView.xaml.cs
+++ b/DiscordChatExporter.Gui/Views/Dialogs/SettingsView.xaml.cs
@@ -1,4 +1,8 @@
-namespace DiscordChatExporter.Gui.Views.Dialogs
+using MaterialDesignThemes;
+using MaterialDesignThemes.Wpf;
+using System.Windows.Media.Media3D;
+
+namespace DiscordChatExporter.Gui.Views.Dialogs
 {
     public partial class SettingsView
     {
@@ -6,5 +10,20 @@
         {
             InitializeComponent();
         }
+
+        private void ToggleButton_Checked(object sender, System.Windows.RoutedEventArgs e)
+        {
+            setBaseTheme(Theme.Dark);
+        }
+
+        private void ToggleButton_Unchecked(object sender, System.Windows.RoutedEventArgs e)
+        {
+            setBaseTheme(Theme.Light);
+        }
+
+        private void setBaseTheme(Theme theme)
+        {
+            Theme.SetCurrent(theme);
+        }
     }
 }
\ No newline at end of file
diff --git a/DiscordChatExporter.Gui/Views/RootView.xaml b/DiscordChatExporter.Gui/Views/RootView.xaml
index fe1710b..c976859 100644
--- a/DiscordChatExporter.Gui/Views/RootView.xaml
+++ b/DiscordChatExporter.Gui/Views/RootView.xaml
@@ -46,10 +46,7 @@
             </Grid.RowDefinitions>
 
             <!--  Toolbar  -->
-            <Grid
-                Grid.Row="0"
-                Background="{DynamicResource PrimaryHueMidBrush}"
-                TextElement.Foreground="{DynamicResource SecondaryInverseTextBrush}">
+            <Grid Grid.Row="0" Background="{DynamicResource MaterialDesignDarkBackground}">
                 <Grid.ColumnDefinitions>
                     <ColumnDefinition Width="*" />
                     <ColumnDefinition Width="Auto" />
@@ -124,8 +121,12 @@
                     Margin="6"
                     Padding="4"
                     Command="{s:Action ShowSettings}"
-                    Style="{DynamicResource MaterialDesignFlatDarkButton}"
+                    Foreground="{DynamicResource MaterialDesignDarkForeground}"
+                    Style="{DynamicResource MaterialDesignFlatButton}"
                     ToolTip="Settings">
+                    <Button.Resources>
+                        <SolidColorBrush x:Key="MaterialDesignFlatButtonClick" Color="#4C4C4C" />
+                    </Button.Resources>
                     <materialDesign:PackIcon
                         Width="24"
                         Height="24"
@@ -136,12 +137,17 @@
             <!--  Progress bar  -->
             <ProgressBar
                 Grid.Row="1"
-                Background="{DynamicResource PrimaryHueMidBrush}"
+                Background="{DynamicResource MaterialDesignDarkBackground}"
                 IsIndeterminate="{Binding IsProgressIndeterminate}"
                 Value="{Binding ProgressManager.Progress, Mode=OneWay}" />
 
             <!--  Content  -->
             <Grid Grid.Row="2" IsEnabled="{Binding IsBusy, Converter={x:Static converters:InverseBoolConverter.Instance}}">
+                <Grid.Resources>
+                    <Style TargetType="TextBlock">
+                        <Setter Property="FontWeight" Value="Light" />
+                    </Style>
+                </Grid.Resources>
                 <!--  Placeholder / usage instructions  -->
                 <Grid Margin="32,32,8,8" Visibility="{Binding AvailableGuilds, Converter={x:Static s:BoolToVisibilityConverter.InverseInstance}}">
                     <!--  For user token  -->
@@ -151,25 +157,25 @@
                             <Run Text="1. Open Discord" />
                             <LineBreak />
                             <Run Text="2. Press" />
-                            <Run Foreground="{DynamicResource PrimaryTextBrush}" Text="Ctrl+Shift+I" />
+                            <Run FontWeight="Bold" Text="Ctrl+Shift+I" />
                             <Run Text="to show developer tools" />
                             <LineBreak />
                             <Run Text="3. Navigate to the" />
-                            <Run Foreground="{DynamicResource PrimaryTextBrush}" Text="Application" />
+                            <Run FontWeight="Bold" Text="Application" />
                             <Run Text="tab" />
                             <LineBreak />
                             <Run Text="4. Select" />
-                            <Run Foreground="{DynamicResource PrimaryTextBrush}" Text="Local Storage" />
+                            <Run FontWeight="Bold" Text="Local Storage" />
                             <Run Text="&gt;" />
-                            <Run Foreground="{DynamicResource PrimaryTextBrush}" Text="https://discord.com" />
+                            <Run FontWeight="Bold" Text="https://discord.com" />
                             <Run Text="on the left" />
                             <LineBreak />
                             <Run Text="5. Press" />
-                            <Run Foreground="{DynamicResource PrimaryTextBrush}" Text="Ctrl+R" />
+                            <Run FontWeight="Bold" Text="Ctrl+R" />
                             <Run Text="to reload" />
                             <LineBreak />
                             <Run Text="6. Find" />
-                            <Run Foreground="{DynamicResource PrimaryTextBrush}" Text="token" />
+                            <Run FontWeight="Bold" Text="token" />
                             <Run Text="at the bottom and copy the value" />
                         </TextBlock>
                         <TextBlock Margin="0,24,0,0" FontSize="14">
@@ -177,7 +183,10 @@
                             <LineBreak />
                             <Run Text="To authorize using bot token instead, click" />
                             <InlineUIContainer>
-                                <materialDesign:PackIcon Margin="1,0,0,-3" Kind="Account" />
+                                <materialDesign:PackIcon
+                                    Margin="1,0,0,-3"
+                                    Foreground="{DynamicResource PrimaryHueMidBrush}"
+                                    Kind="Account" />
                             </InlineUIContainer>
                         </TextBlock>
                         <TextBlock Margin="0,24,0,0" FontSize="14">
@@ -188,25 +197,34 @@
 
                     <!--  For bot token  -->
                     <StackPanel Visibility="{Binding IsBotToken, Converter={x:Static s:BoolToVisibilityConverter.Instance}}">
-                        <TextBlock FontSize="18" Text="Please provide your bot token to authorize" />
-                        <TextBlock Margin="8,8,0,0" FontSize="14">
+                        <TextBlock
+                            FontSize="18"
+                            FontWeight="Light"
+                            Text="Please provide your bot token to authorize" />
+                        <TextBlock
+                            Margin="8,8,0,0"
+                            FontSize="14"
+                            FontWeight="Light">
                             <Run Text="1. Open Discord developer portal" />
                             <LineBreak />
                             <Run Text="2. Open your application's settings" />
                             <LineBreak />
                             <Run Text="3. Navigate to the" />
-                            <Run Foreground="{DynamicResource PrimaryTextBrush}" Text="Bot" />
+                            <Run FontWeight="Bold" Text="Bot" />
                             <Run Text="section on the left" />
                             <LineBreak />
                             <Run Text="4. Under" />
-                            <Run Foreground="{DynamicResource PrimaryTextBrush}" Text="Token" />
+                            <Run FontWeight="Bold" Text="Token" />
                             <Run Text="click" />
-                            <Run Foreground="{DynamicResource PrimaryTextBrush}" Text="Copy" />
+                            <Run FontWeight="Bold" Text="Copy" />
                         </TextBlock>
                         <TextBlock Margin="0,24,0,0" FontSize="14">
                             <Run Text="To authorize using user token instead, click" />
                             <InlineUIContainer>
-                                <materialDesign:PackIcon Margin="1,0,0,-1" Kind="Robot" />
+                                <materialDesign:PackIcon
+                                    Margin="1,0,0,-1"
+                                    Foreground="{DynamicResource PrimaryHueMidBrush}"
+                                    Kind="Robot" />
                             </InlineUIContainer>
                         </TextBlock>
                         <TextBlock Margin="0,24,0,0" FontSize="14">
@@ -226,7 +244,7 @@
                     <!--  Guilds  -->
                     <Border
                         Grid.Column="0"
-                        BorderBrush="{DynamicResource DividerBrush}"
+                        BorderBrush="{DynamicResource MaterialDesignDivider}"
                         BorderThickness="0,0,1,0">
                         <ListBox
                             ItemsSource="{Binding AvailableGuilds}"
@@ -245,7 +263,7 @@
                                             Width="48"
                                             Height="48"
                                             Margin="12,4,12,4"
-                                            Fill="{DynamicResource DividerBrush}" />
+                                            Fill="{DynamicResource MaterialDesignDivider}" />
 
                                         <!--  Guild icon  -->
                                         <Ellipse
@@ -284,7 +302,7 @@
                                                             Margin="0"
                                                             Padding="0"
                                                             Background="Transparent"
-                                                            BorderBrush="{DynamicResource DividerBrush}"
+                                                            BorderBrush="{DynamicResource MaterialDesignDivider}"
                                                             BorderThickness="0,1,0,0"
                                                             Header="{Binding Name}"
                                                             IsExpanded="False">
@@ -322,7 +340,6 @@
                                             Margin="3,8,8,8"
                                             VerticalAlignment="Center"
                                             FontSize="14"
-                                            Foreground="{DynamicResource PrimaryTextBrush}"
                                             Text="{Binding Name, Mode=OneWay}" />
 
                                         <!--  Is selected checkmark  -->