Scipione, the right person just hasn't looked at this thread.
I've seen quite a few painted A/C vents.
I'm not going to get a chance to mess with mine until next weekend. Let us know how it goes. I'm pretty sure they just pop out. I was running out of daylight when I was working on mine, so I just decided to leave them alone.
Mopar, Yeah I need to take some photos. Once I finish the interior, I'll post some up.