rainbow xerath

i have a suggestion about a new skin for xerath. Since he is a color based champion since all his skins are different colors why not have a rainbow skin. For example every time he cast a spell or basic attack its a different color. For example when he Q's the first time its purple and when its a Q, W or E its a different color like red or blue same thing for his ult each shot will be a different color i think it would be a very cool concept. obviously since it would get annoying you get to choose the color you want i think it would be a great ultimate skin with great potential, xerath could have many different forms that would make a effect on his recall moves emotes etc