NEW UI Builder Suggestion/Feature Request

@eve @josh @emmanuel

Morning all, just some food for thought. Not sure if this has been mentioned before but it would be great if you could implement UI Builder color code system whereby the color (in this instance is a group) IS ONLY displayed in UI Builder view only and not on the public facing app. I believe this would be a great addition and help when creating complex layouts, especially when we are using groups as spacers with hidden properties - please see the example below.