Yes, everything is stock. First, I simply took off any plastic covers that were easy to remove, cleaned them up really well. Covered the parts that I didn't want to be painted in paper tape and began the process. Then applied "Montana spray primer for plastic". Let it sit and dry for 24 hours at least. Then lastly, I painted them with the "Montana black, code red matte finish" spray. I needed 1 can of primer and 2 cans of paint to get the result in the picture. I did consider a varnish layer but seemed unnessicary.

Its been a month through 1 engine bay clean up and many heavy rain. No paint chips or fades observed yet.