Hi, Theres nothing fancey about the bulbs, they are on the shelf at your local parts shop where you should find colored ones as well, at the same price as the standard ones. If not stocked locally you will also find on Ebay at a cheap price. You can also get blue LED bulbs which may look even more funky. However, colored bulbs are not legal here in UK, although police dont seen to take an interest. Im not sure what the position in is in USA.
Cheers Steve