Sram will do it for you if you ride for them.
Also you can completely take apart the derailleur and ANO and paint the parts yourself if you really want to.
I didn't say they looked good, I was just saying to Rattsl that you can customize Shimano parts with the Yumeya kit.
And some people like it. A bike isn't a fashion accessory.
SRAM are doing a limited edition anodised colour scheme on the X-0 stuff and the noir xc stuff. I think it's like red, green, pink, orange and something else I can't remember.
only those colours ,better let it done by some company witch can annodise your'e XO or X9 in all the colours off the rainbow so you aren't limeted what sram offers.