<Circles xmlns="http://schemas.openxmlformats.org/Circles/v1" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" xmlns:v2="http://schemas.openxmlformats.org/Circles/v2" xmlns:v3="http://schemas.openxmlformats.org/Circles/v3">
  
    
    
       <LuminanceFilter Luminance="13">
          <Circle Center="0,0" Radius="20" Color="Blue" v2:Opacity="0.5"/>
          <Circle Center="25,0" Radius="20" Color="Black" v2:Opacity="0.5"/>
          <Circle Center="50,0" Radius="20" Color="Red" v2:Opacity="0.5"/>
          <Circle Center="13,0" Radius="20" Color="Yellow" v2:Opacity="0.5"/>
          <Circle Center="38,0" Radius="20" Color="Green" v2:Opacity="0.5"/>
       </LuminanceFilter>
    
  
</Circles>