This is the 98-00 unit but the same exact thing can be done for the 01-02. Just grab some red tail light tape and cut a piece that is big enough to get you adhesion on both sides of the hole, and slap it on behind the rear defrost button. Button is the OEM orange in daylight, but illuminates as red at night. I guess if you were doing a red HVAC theme, you could save yourself some money and just use this behind every button instead of buying LED's.
I need to take out the filters behind the Mode and A/C buttons.