i am copying my posts from another thread. I have nearly every bulb replaced in this damn car. I suggest LED's for the inside, yellow for the fogs, and a nice color of HID for the headlights. 6000K is very bright and looks great (like the pics 2 posts up) tho i got 8000K which are bluer but not as bright:
here are some of mine when replaced to coolwhite leds from superbrightleds.com:
I put luminics yellow in the fogs, headlights are 8000K hid, high beams are also 8000K hid, front signals are silverstar, rear signals are led, reverse lights are led:
I like 8000K for the bluish white look, tho i personally think 6000K are the nicest looking because they are bright as hell and very white with a slightly purple hid look at an angle. We have 6000K on my wife's jetta and its brighter than my 8000K by far and looks cleaner
silver star turn signals give a nice blue/purple reflection when off but light up orange/amber when turned on:
clear led rear turn signals, make the bowl clear when off (instead of reflecting all orange when the stock amber bulb is in) yet they light up amber when turned on to signal:
also replaced the rear and rearside reflectors for smoked ones that light up led red when turned on: