Re: DC's New 52: Reviews and Discussion (Spoilers welcolme and likely)
I think Jason's hair is another New52 change. Pre-crisis it was red. Post crisis it was black, then Morrison brought it back to red. Now it's black again.
"In Brightest Day, in Blackest Night, no evil shall escape my sight. Let those who worship evil's might, beware my power: Green Lantern's light!"