radvans: you have to get new bulb holders, i have a link for them from an arcade shop, their about $10 for 8 of them. Then LED's are about $15 for Super bright led's.
Far as the odometer overlay, you cant do it easily. I took my 2000 cluster apart to play with it for that very reason after i put my escalade cluster in.
Anyway, the color of the plastic deal is actually blue when held against white light (background is my computer monitor...so im thinking the color display has some hue to or it or is an overpowering green (much like blue led's against your orange needles make them blue at night).
Actual display without cover:
Side view, you see it has a glass screen ontop...im thinking this has something to do with it becoming green through the overlays.
Im still working on the issue because if i figure it out, ill be happy to have all matching blue in my 2000.