Yeah red is even harder. Flavor-wise everything I've read describes the difference just as Beernip posted above. Personally, I didn't find all that much difference. I'll state though I've only used red wheat for my hefeweizen one time, all others it's been white wheat, so I don't have much experience with it. I just found after the one there was such little difference I just kept with what's easiest to get. Most places don't sell the red wheat. I'd gotten mine from Rebel Brewer I believe.
Rev.