Hydro dipping AKA water transfer printing is definitely your best bet for this imo.
I had it done on my old Zed a few years ago by "AquaGraphix" and it was around £70 including delivery for them to prep, spray, dip & lacquer both my door switch panels plus the grab handle strip.
Link here to my thread about it with pictures: http://www.350z-uk.com/topic/86048-hydro-dipped-interior-parts-door-pulls-grab-handle/
Two professional traders on here who will be able to give you more help, pattern options & current pricing etc.
Eve@AquaGraphix: http://www.350z-uk.com/forum/227-aquagraphix/
Ricey@rEvolveAutomotive: http://www.350z-uk.com/forum/220-revolve-automotive-ltd/
Also it can make things easier if you purchase some spare door switch panels and just send those off for dipping if your car is a daily driver as mine was (saves driving around for a week or two with the interior in pieces).
Zmanalex should be able to help you out with those if you do need spares: http://www.350z-uk.com/user/9648-zmanalex/
Also you could always try dipping for yourself as I have. It will be more cost effective for you just to pay a professional to do it for you though but I enjoy doing what I can myself so invested some cash in the set up to do it as I know I'm going to want more parts dipped on cars I own etc in the future.
Link: http://www.350z-uk.com/topic/102662-tried-my-hand-at-hydro-dipping-aka-water-transfer-printing/
Any questions just ask.