I don't think they're a bad idea, just a poor execution by a low-rent company. Tomahawk retreads are basically junk for anything other than stunting (not so sure they're great for that either). I've got two friends who ran colored tires on their MX bikes and they weren't bad tires. One ran the yellow Michelins (which eventually became dingy and looked like crap) and one ran the camouflage Innova's (which looked good the day he took them off). I think that they're just a novelty for dirt riders and squids, but serious street tire manufacturers won't fool around with them in such a performance driven industry. While I think orange slicks on a KTM might be kind of cool, I wouldn't buy them from anyone other than Michelin, Dunlop, Pirelli or Bridgestone. Notice that Michelin never introduced the pigmented tires to the street sector. I imagine there's a good reason behind their decision. Just my .02 worth.