For those wanting to DIY on painting the vents and/or bring them in to get vinyl wraped: Vents are held on by clips. The inner liner must first be removed, then the clips release from the inside allowing the plastic trim to pop out.
Just a side note, those clips are easily breakable, don't try and pop them out from the outside ... just saying is all, not that I have any experience with that or anything![]()
I removed mine recently, was pretty easy. Just unscrew the liner and pry it up a bit, then reach in and feel for some clips, once you apply some pressure on them the trim piece should start coming off. Also note there is some double sided tape helping to hold them on.