I am soo on the fence with this one. Both have equally postive traits and results in my honest opinion.
I really relate to the vastness it can create and it's more natural looking qualities is what drove me to chose blue. The overall brightness it presents is also an appreciated feature, when in the dark watchin HGTV with the lady I can look over from afar and enjoy.
But, the part that does elude me is the eye catchingness a black background can even bring to the smallest frag, while a blue one makes it harder to notice. Im at the point now since it's not painted Im thinking of changing the background.
I like the point the earlier poster made, though he gets no compliments on the black background, rest assured there looking at the fish and coral now and not the background.
-Justin