Thanks. I just used an RA4 kit, I forget which, but it has two part colour developer and two part blix, both liquid. You mix those with warm water and agitate for 45 sec in the CD and 45 in the blix and rinse, that's it. I didn't even measure temp or time it carefully or anything. If it interests you at all, then certainly give it a try while the materials are still available and inexpensive; the process is *very* simple. The main problem is that the fuji paper I used has all manner of logos and whatnot on the back, so... that'd be a problem if you wanted to contact print the paper neg. But I have been playing with negative colour just for its own sake. I gather that you can get rid of the backing with some sort of caustic treatment. One minor problem I've had is that the blank borders are not white, they are yellowish. Minor issue and probably something I did wrong