[Capin]

I have some small parts that I want to dye black and red I did a search but from what I have seen there does not seem to be a really good way to dye a part multipul colors? Surely there is something out there that one can use to cover the anodize. I did a Google search and there are places that do multipul colors but no info on how exatly they are doing it?
We need a sure fire method posted as a sticky can anyone shed some light on this problem?