If you check out my thread titled "headlights" it has pictures I posted of some of the colors. Just comparing white alone, it looks so much better with an LED bulb. I used a 5 LED T10 bulb for the extra brightness. The pictures show the different types available. I really liked the blue, thought the red looked menacing but some of the colors weren't visible, which can be seen in the pictures. There are two main bulbs... one for the speedometer and another for the fuel gauge... the others are for blinkers, hi/low et cetera and single LED were sufficient to light them up. I tried one red, one blue, white and blue, red and white, alternating sides and finally settled one two white because it gave the most visibility but the colors did look really good mixed. There are purple, green, blue, yellow, red and white colors last I checked... couldn't get a green at the time (hard to find in stock) and I have seen purple since. Don't be afraid to order two of everything and try it out. There are some good chinese websites that sell them real cheap (1-2 dollars each but might be ordering 5 or 10) if you aren't in a hurry but USA sites were about 5-8 dollars each.
I am also looking into ordering a Mio gauge so all that work may have been for naught (by work, I mean pull out a bulb and push the new ones in
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