There is a place locally to me that I've been using for hydro dipping and I'd imagine there is one fairly close to you. All you have to do is get a quote from them for the part you want dipped, remove the part & send it to them. Then they prep it, spray down a base coat colour of your choice, then the pattern of your choice and then lacquer it. The results are fantastic. Like below;
Hydro dippers; http://www.pitstopdesigns.co.uk/