new_dharma, how'd it turn out? I'm gonna guess, not so good.
I ordered some tire paint from Ranger Labs, and well, it looks really promising. I painted one tire put it back on the car, drove about 15 miles, and it looks good still... got in the car this morning (to go get more foam brushes) and by the time I drove about 6 miles, it was cracking. I don't think many paints at all are going to work well... I keep hearing about that icelandic paint, but it's like $25 +$25 shipping for one can, an awfull lot to burn to try it. I guess I'll just swap my tires around so that the failed whitewalls are facing inward, and save my pennies.