Right here in this BUD section, Linuxman ran a thread last year about painting his.
You might dig it up and read through it for good 'n bad ideas.
Was pretty comprehensive, as I recall.
His was a solid... and about 8 feet, I think.
I was thinking like rustolium flat black, I chose to hold off to check with you guys first, since it's an aluminum dish rust shouldn't be an issue and it's only coming off in a few spots, the mount is steel of coarse (with minor surface rust, nothing a grinder can't handle).
I remember seeing that post, I'll have to go back and find it. Thanks for reminding me...