Add Dark.xaml theme resource dictionary

Author: manzing

Themes/Dark.xaml

@@ -0,0 +1,22 @@
+<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
+
+    <SolidColorBrush x:Key="AccentBrush" Color="#FF7E98B3" />
+    <SolidColorBrush x:Key="AccentHoverBrush" Color="#FF91A8C0" />
+    <SolidColorBrush x:Key="AccentForegroundBrush" Color="#FF10161C" />
+    <SolidColorBrush x:Key="AccentSubtleBrush" Color="#FF263240" />
+
+    <SolidColorBrush x:Key="WindowBrush" Color="#FF151A20" />
+    <SolidColorBrush x:Key="PanelBrush" Color="#FF1C232B" />
+    <SolidColorBrush x:Key="PanelElevatedBrush" Color="#FF222B34" />
+
+    <SolidColorBrush x:Key="BorderBrush" Color="#FF34404B" />
+    <SolidColorBrush x:Key="BorderStrongBrush" Color="#FF495867" />
+
+    <SolidColorBrush x:Key="HeaderTextBrush" Color="#FFE7EDF3" />
+    <SolidColorBrush x:Key="BodyTextBrush" Color="#FFD5DEE8" />
+    <SolidColorBrush x:Key="MutedTextBrush" Color="#FF9BAAB8" />
+
+    <SolidColorBrush x:Key="DangerBrush" Color="#FFE07A7A" />
+    <SolidColorBrush x:Key="SuccessBrush" Color="#FF7FC18F" />
+</ResourceDictionary>