Now use accent color for select button

src/modules/colorPicker/ColorPickerUI/Controls/ColorPickerControl.xaml

@@ -369,13 +369,13 @@
                             TextChanged="HexCode_TextChanged"
                             TextWrapping="Wrap" />
 
-                        <Button
+                            <Button
                             x:Name="OKButton"
                             Grid.Row="9"
                             Grid.ColumnSpan="4"
                             Margin="0,32,0,0"
                             HorizontalAlignment="Stretch"
-                            Background="{DynamicResource PrimaryBrush}"
+                            Background="{DynamicResource {x:Static SystemColors.AccentColorBrushKey}}"
                             AutomationProperties.Name="{x:Static p:Resources.Select}"
                             Click="OKButton_Click"
                             Content="{x:Static p:Resources.Select}" />

src/modules/colorPicker/ColorPickerUI/Resources/Styles.xaml

@@ -10,9 +10,7 @@
     <converters:ColorToStringConverter x:Key="colorToStringConverter" />
     <converters:NumberToVisibilityConverter x:Key="numberToVisibilityConverter" />
     <converters:NumberToInvertedVisibilityConverter x:Key="numberToInvertedVisibilityConverter" />
-    
-    <SolidColorBrush x:Key="PrimaryBrush" Color="#FF00CC6A" />
-    
+
     <Style x:Key="SubtleButtonStyle" TargetType="{x:Type Button}">
         <Setter Property="FocusVisualStyle" Value="{DynamicResource DefaultControlFocusVisualStyle}" />
         <Setter Property="Foreground" Value="{DynamicResource TextFillColorPrimaryBrush}" />