Ok you guys dont get mad. I'm just going to have a little fun with you. The product that you are searching for has been for sale at bass pro for a couple of years now. Yes its on their website too.
it is not the same product that is used for airbrushing soft baits so I am not giving up any great secret but it works just fine for making spots and red gills etc. It does not fade or bleed. Come on guys you can figure it out. If not I will tell you tomorow :P
lets see who can find it first