Hilt powder coating modification for x2 Guardians

I have just ordered 2 emerald Guardians to make a staff as they are beautiful BUT I do wish to change their appearance to a more dark Side looking saber. I want to get the main silver parts of the hilts powder coated in a semi gloss black, the silver cut outs on the grip powder coated gold as well as the groves in the black piece of the emitter, the slight flange on the emitter also in gold, maybe some vents in that section of the sabers if that is possible/enough room so to see the blade colours and the black parts of the grips dressed in black leather ... So all that said is there anyone in the UK that can do this for me to a very high quality level??