If you wanted to get rid of them and you wanted to do a DIY without changing the bumper you could colour code them yourself

Just sand the plastic down a bit, prime them, and then paint a few coats on them with the right spray paint. (I got mine from super cheap with the code which should be on the inside of the drivers side door and dont forget to tape off the edges so the paint doesnt run )
In total cost me about 50 bucks. (1 Can of primer, 3 cans of Spray Paint, 3 Different grades of sand paper)