Are you talking about the ones off of Ebay? I bought one for my old Sonata and boy was that the biggest mistake EVER. It was held on by double sided sticky tape. Every other day different parts were coming off not to mention it looked really tacky. It was by far the worst $100 I spent
Got mine from MimoUSA. It's made of real aluminum. Held on by 3M tape. Just ify about painted the trim myself again. Tried on my old Monte Carlo, but results sucked. Dash trim has a rubber coating on it that is hard as hell to sand off.
If it is similar to this thing, I would stay away. Remember if you get out of your car in the pooring rain and it gets wet then it is more than likely going to come off, because after all it is just double sided tape.