A 194/T10/168 bulb works (the same for the courtesy). There is an aqua tinted sheet under the numbers. Even with a blue led it's going to look greenish. I got some needle nose pliers on it and pulled it out in a few pieces. Then the top is clear. I had to paint the top of the bulb (4 led top) black because it was shining directly in my eyes.
2003 TJ, 33" BFG AT, 2" BL, 2" BDS spring lift, Truck Lite headlights, Homemade sunrider top.