Avalonia/tests/Avalonia.Markup.Xaml.UnitTests/Xaml/Style2.xaml

<Style xmlns="https://github.com/avaloniaui"
       xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
  <Style.Resources>
    <SolidColorBrush x:Key="RedBrush" Color="{DynamicResource Red}"/>
    <SolidColorBrush x:Key="GreenBrush" Color="{DynamicResource Green}"/>
    <SolidColorBrush x:Key="BlueBrush" Color="{DynamicResource Blue}"/>
  </Style.Resources>
</Style>