[glassdoctor]

I've done titanium turnbuckles before. There are several home brews that work... it's an electrolysis thing, using a current and a chemical solution. I don't recall what liquid I used. I think I used like 35-40 volts (four or five 9v batteries hooked together).... one lead goes into the solution and the other connects to the metal and it's dipped.

I got a gold color.... but most were doing blue/purple. I'm sure you can google and find some ideas.