This has been answered plenty of times but i can't find the threads haha.
I plasti-dipped mine matte black after a month of having the car. If I looked at it the wrong way, the b-pillar would scratch. I just taped off and masked the car and sprayed them in my driveway. 4 or 5 coats. 2.5 years later they still look great but with some discoloration where I touch them close the door sometimes. I think I'll re-do them in the spring.
As mentioned before, many people use PlastX with great success. That would probably be your easiest option