Override accent color at element level

[skint007]

Is there a way to override the accent color at the element level in XAML?

I saw something that I thought would be promising in the Sample app but doesn't do quite what I want.

What I'm looking for is being able to use a different accent color for different buttons depending on what I might need it for. For example, having the save button be set to the default accent color is fine, but if I want a delete button and want it to be red for example, how would I accomplish this? I like that when using the accent color, it automatically calculates all the other colors used by controls etc.

This is the sample I found, but doesn't actually change the accent color, it just changes a single brush based on theme.

<Rectangle
	Width="{StaticResource ItemWidth}"
	Height="50"
	HorizontalAlignment="Left"
	Fill="{DynamicResource CustomThemeBrush}"
	ui:ThemeManager.HasThemeResources="True">
	<Rectangle.Resources>
		<ui:ResourceDictionaryEx>
			<ui:ResourceDictionaryEx.ThemeDictionaries>
				<ResourceDictionary x:Key="Light">
					<SolidColorBrush x:Key="CustomThemeBrush" Color="DarkRed" />
				</ResourceDictionary>
				<ResourceDictionary x:Key="Dark">
					<SolidColorBrush x:Key="CustomThemeBrush" Color="Orange" />
				</ResourceDictionary>
				<ResourceDictionary x:Key="HighContrast">
					<SolidColorBrush x:Key="CustomThemeBrush" Color="DarkBlue" />
				</ResourceDictionary>
			</ui:ResourceDictionaryEx.ThemeDictionaries>
		</ui:ResourceDictionaryEx>
	</Rectangle.Resources>
</Rectangle>