Thanks for the tip. I never though of it since they weren't seen from the back, but none the less, good idea for future parts.
Now I just need to come up with a way to get them off without scratching them. A flat-blade screwdriver is too thick. Might try a jeweler's screwdriver (ya know, the tiny set of like 6)?
So I decided that after work tonight I would start sanding the dash trim bezel. Well, 100 grit isn't cutting it. Apparently the part that is the color of the interior is actually painted too. So when I sand it, it goes back to black, not gray. Also, the black parts seem to want to go to gray and not black. I haven't totally figure out what the heck GM did when they made them, but I'm sure I'll uncover the secret soon enough.
Next up: buy some 80 or even 60 grit sand paper tomorrow and try that.