diff --git a/src/Avalonia.Themes.Default/Accents/BaseDark.xaml b/src/Avalonia.Themes.Default/Accents/BaseDark.xaml
new file mode 100644
index 0000000000..95b351b148
--- /dev/null
+++ b/src/Avalonia.Themes.Default/Accents/BaseDark.xaml
@@ -0,0 +1,56 @@
+<Style xmlns="https://github.com/avaloniaui"
+       xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+       xmlns:sys="clr-namespace:System;assembly=mscorlib">
+    <Style.Resources>
+
+        <Color x:Key="ThemeAccentColor">#CC119EDA</Color>
+        <Color x:Key="ThemeAccentColor2">#99119EDA</Color>
+        <Color x:Key="ThemeAccentColor3">#66119EDA</Color>
+        <Color x:Key="ThemeAccentColor4">#33119EDA</Color>
+
+        <Color x:Key="ThemeBackgroundColor">#FF282828</Color>
+        <Color x:Key="ThemeBorderLowColor">#FF505050</Color>
+        <Color x:Key="ThemeBorderMidColor">#FF808080</Color>
+        <Color x:Key="ThemeBorderHighColor">#FFA0A0A0</Color>
+        <Color x:Key="ThemeControlLowColor">#FF282828</Color>
+        <Color x:Key="ThemeControlMidColor">#FF505050</Color>
+        <Color x:Key="ThemeControlHighColor">#FF808080</Color>
+        <Color x:Key="ThemeControlHighlightLowColor">#FFA8A8A8</Color>
+        <Color x:Key="ThemeControlHighlightMidColor">#FF828282</Color>
+        <Color x:Key="ThemeControlHighlightHighColor">#FF505050</Color>
+        <Color x:Key="ThemeForegroundColor">#FFDEDEDE</Color>
+        <Color x:Key="ThemeForegroundLowColor">#FF808080</Color>
+
+        <Color x:Key="HighlightColor">#FF119EDA</Color>
+        <Color x:Key="ErrorColor">#FFFF0000</Color>
+        <Color x:Key="ErrorLowColor">#10FF0000</Color>
+
+        <SolidColorBrush x:Key="ThemeBackgroundBrush" Color="{DynamicResource ThemeBackgroundColor}"></SolidColorBrush>
+        <SolidColorBrush x:Key="ThemeBorderLowBrush" Color="{DynamicResource ThemeBorderLowColor}"></SolidColorBrush>
+        <SolidColorBrush x:Key="ThemeBorderMidBrush" Color="{DynamicResource ThemeBorderMidColor}"></SolidColorBrush>
+        <SolidColorBrush x:Key="ThemeBorderHighBrush" Color="{DynamicResource ThemeBorderHighColor}"></SolidColorBrush>
+        <SolidColorBrush x:Key="ThemeControlLowBrush" Color="{DynamicResource ThemeControlLowColor}"></SolidColorBrush>
+        <SolidColorBrush x:Key="ThemeControlMidBrush" Color="{DynamicResource ThemeControlMidColor}"></SolidColorBrush>
+        <SolidColorBrush x:Key="ThemeControlHighBrush" Color="{DynamicResource ThemeControlHighColor}"></SolidColorBrush>
+        <SolidColorBrush x:Key="ThemeControlHighlightLowBrush" Color="{DynamicResource ThemeControlHighlightLowColor}"></SolidColorBrush>
+        <SolidColorBrush x:Key="ThemeControlHighlightMidBrush" Color="{DynamicResource ThemeControlHighlightMidColor}"></SolidColorBrush>
+        <SolidColorBrush x:Key="ThemeControlHighlightHighBrush" Color="{DynamicResource ThemeControlHighlightHighColor}"></SolidColorBrush>
+        <SolidColorBrush x:Key="ThemeForegroundBrush" Color="{DynamicResource ThemeForegroundColor}"></SolidColorBrush>
+        <SolidColorBrush x:Key="ThemeForegroundLowBrush" Color="{DynamicResource ThemeForegroundLowColor}"></SolidColorBrush>
+
+        <SolidColorBrush x:Key="HighlightBrush" Color="{DynamicResource HighlightColor}"></SolidColorBrush>
+        <SolidColorBrush x:Key="ThemeAccentBrush" Color="{DynamicResource ThemeAccentColor}"></SolidColorBrush>
+        <SolidColorBrush x:Key="ThemeAccentBrush2" Color="{DynamicResource ThemeAccentColor2}"></SolidColorBrush>
+        <SolidColorBrush x:Key="ThemeAccentBrush3" Color="{DynamicResource ThemeAccentColor3}"></SolidColorBrush>
+        <SolidColorBrush x:Key="ThemeAccentBrush4" Color="{DynamicResource ThemeAccentColor4}"></SolidColorBrush>
+        <SolidColorBrush x:Key="ErrorBrush" Color="{DynamicResource ErrorColor}"></SolidColorBrush>
+        <SolidColorBrush x:Key="ErrorLowBrush" Color="{DynamicResource ErrorLowColor}"></SolidColorBrush>
+
+        <Thickness x:Key="ThemeBorderThickness">1,1,1,1</Thickness>
+        <sys:Double x:Key="ThemeDisabledOpacity">0.5</sys:Double>
+
+        <sys:Double x:Key="FontSizeSmall">10</sys:Double>
+        <sys:Double x:Key="FontSizeNormal">12</sys:Double>
+        <sys:Double x:Key="FontSizeLarge">16</sys:Double>
+    </Style.Resources>
+</Style>