my horse has white legs (pinto) and is barefoot with good feet. Never had an issue (knock on wood) but he is stalled at night so his feet "dry out" and get cleaned regularly. His feet are striped...
I won't look at any horse with out a video. With gas being 4.20 now I'd be crazy to go even 30 mins.
If they can't put together a video I'm not sure how serious they are about selling at any price...