I'm considering doing it myself as well. It's getting too costly for me to send out. I've read several posts from people who've done it and it doesn't seem any harder than B&W. My biggest concern, obviously, was temperature control, but it sounds like this can be reliably done with a water bath in a cooler of some sort. One issue left seems to be that the mixed chemicals only seem to last for a week or so, and it would take me many months to shoot enough color film for even the eight roll kits I've seen.