Well I finished my aluminum flashing rail covers, painted and installed them. I sealed them with black silicone caulk around the edges and mounted with 3M high strength mounting tape. I would grade the project a "B". The sheen level is not perfect and neither is the profile. It took me 2 hours to build/paint and one hour to install. If I spent twice as much time, I could have got it nearly perfect. Maybe someday I'll redo it, but for now it is OK.
Dave