Might be best to take one out and take it with ya. Those tiny little bulbs might be hard to find, i can't even find the numbers in my Chilton's manual. Where are you planning on getting the bulbs from anyways? Fill us in.
Dealer gets 3.99 for them. Changing their color wont' do much, it's the plasitic that colored. Thought about digging it out and replacing it with colors I like, but never did. You can use any 12v bulb far as I can tell. You could solder in a resister and use any voltage bulb you want, too. Whatever blows your skirt up ya know?