Over at Seven Hells, the recent article on Black superheroes (as well as the fine new blog, Glyphs, which focuses on black characters in comics) has inspired me to post yet another idea for the Martian Manhunter (whose lack of a title or even a backup series annoys me).
J'onn J'onnz should be black.
That is, his secret identity should be black. I believe that in Morrison's "White Martian" JLA storyline, it was established or strongly implied that Green Martians were the Black people of Mars. With that as background, JJ can be conceived of as identifying more easily with a secret identity as a black man (to the degree that someone as alien as he can identify with any "earthling").
Even within DC's fuzzy chronology, I think it's fair to say that J'onn was around during at least some of the "Civil Rights Era"; that's got to leave an impression on a guy, particularly one who's just arrived from another planet.
What's more, some people who erreth not but shall remain nameless, have suggested headquartering J'onn (who desperately needs a fictionopolis of his own) in a reintroduced Federal City, with its large black community. Interesting! There are dumber things the JLA could do than put its telepath in the center of the capital of the free world...
So--for the Manhunter at least-- is Green the new Black, as another blog is fond of saying?