i think there are like 3 or 4 bulbs behind the cluster, and they are spread out throughout the cluster for even (sort of) lighting. you'll have to pull the cluster out so you can have access to the rear of it, where the bulbs come out. you can pull the bulbs, then solder a 220ohm resister to 2 5000+mcd leds and solder the setup to each light socket. (so a total of 3 or 4 resistors and 6 or 8 leds)
i wouldnt reccommend scraping the color off and leaving the stock bulbs to show thru white. i dont think it'll come out looking how you want it, as leo said, the stock bulbs have a definite cheap yellow hue to them. white leds shine bright white... with almost a touch of blue, theyd give it a really nice look i think, but i havent seen it done before :o)
*SOLD 05/24/08* 2003 Silver Frost XLT 4 Door, 3.0 v6 4x2 Automatic.
255/60 Toyo Proxes S/T on 18 x 9 Boss 304 Chrome Wheels.
Slotted Rotors with Ferro-Carbon pads.
Volant CAI, Crane Roller Rockers, Borla Pro XS Exhaust, MSD DIS-4 Plus Ignition.
Kenwood Headunit w/7" Screen, Infinity Kappas in front and rear, 12" JL Sub,
Custom Ported Enclosure with Flushmounted Infinity Amps.
Custom Interior including Reupholstered Headliner and 7" Visor-mounted LCD Screens.