     case RGB(r: ColorMode, g: ColorMode, b: ColorMode)
 }
 
-class ColorManager {
+struct ColorManager {
     var radius: CGFloat = 0
     var theta: CGFloat {
         set(newTheta) {

    
    var maxRadius: CGFloat = 0

    var colorModel: ColorModel

    var title: String?



        return channelValue
    }
}
