I dont really want to use the accent color that the user has chosen in Windows in my app, and instead want to have my own color show. I can change it manually on all the items by by making new styles, but it is just in so many places in the normal controls, that it would be nice to do on the app level.
I tried setting <SolidColorBrush x:Key="SystemAccentColor" Color="#FFCB2128" /> but for some reason that does noting on some items and turns others like the video controls gray.
On Win10 UWP, System Accent color is defined as ThemeResource SystemControlHighlightAccentBrush.
You can override it as following.
<ResourceDictionary.ThemeDictionaries>
<ResourceDictionary x:Key="Default">
<SolidColorBrush x:Key="SystemControlHighlightAccentBrush" Color="Orange" />
</ResourceDictionary>
<ResourceDictionary x:Key="Dark">
<SolidColorBrush x:Key="SystemControlHighlightAccentBrush" Color="Green" />
</ResourceDictionary>
<ResourceDictionary x:Key="Light">
<SolidColorBrush x:Key="SystemControlHighlightAccentBrush" Color="Blue" />
</ResourceDictionary>
</ResourceDictionary.ThemeDictionaries>
To change accent color on every system control you have to redefine the system resource as follows.
Note that SystemAccentColor is a color, not a brush. If you don't redefine all other brushes, the color won't be applied on everything.
<ResourceDictionary.ThemeDictionaries>
<ResourceDictionary x:Key="Default">
<Color x:Key="SystemAccentColor">#FF20A060</Color> <!--Your accent color-->
<SolidColorBrush x:Key="SystemControlBackgroundAccentBrush" Color="{ThemeResource SystemAccentColor}" />
<SolidColorBrush x:Key="SystemControlDisabledAccentBrush" Color="{ThemeResource SystemAccentColor}" />
<SolidColorBrush x:Key="SystemControlForegroundAccentBrush" Color="{ThemeResource SystemAccentColor}" />
<SolidColorBrush x:Key="SystemControlHighlightAccentBrush" Color="{ThemeResource SystemAccentColor}" />
<SolidColorBrush x:Key="SystemControlHighlightAltAccentBrush" Color="{ThemeResource SystemAccentColor}" />
<SolidColorBrush x:Key="SystemControlHighlightAltListAccentHighBrush" Color="{ThemeResource SystemAccentColor}" Opacity="0.9" />
<SolidColorBrush x:Key="SystemControlHighlightAltListAccentLowBrush" Color="{ThemeResource SystemAccentColor}" Opacity="0.6" />
<SolidColorBrush x:Key="SystemControlHighlightAltListAccentMediumBrush" Color="{ThemeResource SystemAccentColor}" Opacity="0.8" />
<SolidColorBrush x:Key="SystemControlHighlightListAccentHighBrush" Color="{ThemeResource SystemAccentColor}" Opacity="0.9" />
<SolidColorBrush x:Key="SystemControlHighlightListAccentLowBrush" Color="{ThemeResource SystemAccentColor}" Opacity="0.6" />
<SolidColorBrush x:Key="SystemControlHighlightListAccentMediumBrush" Color="{ThemeResource SystemAccentColor}" Opacity="0.8" />
<SolidColorBrush x:Key="SystemControlHyperlinkTextBrush" Color="{ThemeResource SystemAccentColor}" />
<SolidColorBrush x:Key="ContentDialogBorderThemeBrush" Color="{ThemeResource SystemAccentColor}" />
<SolidColorBrush x:Key="JumpListDefaultEnabledBackground" Color="{ThemeResource SystemAccentColor}" />
</ResourceDictionary>
</ResourceDictionary.ThemeDictionaries>
Add the following to App.xaml if you are not using any templates or ResourceDictionaries:
<ResourceDictionary>
<Color x:Key="SystemAccentColor">#FFCB2128</Color>
</ResourceDictionary>
If you are using the Minimal Template10 template, then add the following line to Styles/Custom.xaml after the CustomColor and ContrastColor values:
<Color x:Key="SystemAccentColor">#FFCB2128</Color>
If you have your own ResourceDictionary somewhere else, linked from App.xaml, then similarly add the "Color" line there.