You're talking about getting an extra, while I can't even find one! hehe, good luck, Purple is an odd choice, but I kinda like it.
Well I found the extra today. Actually found a whole bunch at WM today. Picked up an extra Rumble, Ravage, and Skids all for repaints. And I think purple more because there are enough blue cars alreayd. Tracks, Skids, Mirage, Smokescreen, and my custom Breakdown. Also Wheeljack has blue accents. The only purple so far is Shockblast and my custom Motormaster. And I always liked the cartoon accurate version of Frenzy.