Sorry - wasn't paying attention - here you go!
It really needs to be powdercoated to hold up in the long run. I scuffed the part then used SEM self etching primer (black) followed by SEM trim flat black. It was hot and dry out so I just did a fast & dirty paint job on it to get a feel for how it would look. It looks 'right' - blends in nicely. And I like the contrast with the silver fasteners front the front. I'm not usually one for the 'blacked out' look, but in this case the silver support *looked* like out of place.