I don't know man. That Stand Your Ground shit is so squishy, I couldn't even see a black man getting off in this scenario if the roles were reversed. I think it would be more likely that he would get convicted, and people would protest because of the unfair execution of the law. Then they would change the law, not necessarily to get rid of it, but to come up with some bullshit reasoning for why when white people do it, its ok, but when blacks do it, it's not.
That's pretty much happened with the the drug war. They were called out on the unfairness of the sentencing laws between powder cocaine and crack. They didn't stop convicting black crack dealers/users. They just added stupid reasoning behind the laws to excuse what they were doing. No one addressed that shit until Obama came along, and I suspect he only got it done because the meth epidemic was popping off and whites were starting to get serious time since the sentencing rules for that are closer to crack than powder.