When I know of another denomination or another color and do not have permission to show the chip on chip guide, I simply update with a word description and do NOT suggest a photoshop image since true manufactures' color/shade might not be accurate and could be costly to a collector which, answers the first question that a contributor should not have to own any item/image they contribute and, that contributor should not have to be a member or the CCA in order to submit but, must inform CG with their name, at least...