Hi Tom, there really are no consequences leaving them black. As far as painting them, if you are willing to let them black, I would just get a few cans of paint made for plastic that matches your car. That's the cheapest thing to do. You can't use regular paint. It needs to have a flex additive in it, otherwise, anytime you push on the plastic and it flexes, the paint will crack.
Also, if you have a paint sprayer, use a single-stage urethane paint with a flex additive. That is the cheapest way I know if to do it that way.
I attached the directions below for the removal and replacement of the front and rear covers.
I hope this helps. Let me know if you have other questions.
Take care,
Joe
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Tuesday, August 3rd, 2021 AT 9:20 PM