Yup, that will work as well. Wurth makes some good products. I cleaned up a set of wheels with their silver wheel paint.I've used this stuff by Wurth. It's made for black auto trim, and best of all is designed to flex with plastic to avoid peeling, cracking.
Uh, that not only goes for trim, but the rest of your car as well. If your front bumper gets hit it will look like crap as well. I can take some pictures of my friend's Volvo if you need them. It's been about four years since he painted them with the method I described and it still looks good. I didn't recommend him take that panel off because it's at the bottom of the car and he can tape the upper half and not get any overspray on the car. If it were the side trim I would definitely pull it off before painting.Painting can just lead to chipping. Especially with trim pieces if you are parking and get tapped, it will look like crap.
I use back to black. Take off the trim (It pulls off) and it will look much better. it does last quite a while. I did the same with the mirrors.