I thought about doing it black a while ago but thought I would have to move the tank to do it , never put much thought into it . Then realized it could be done and did it. I always used blue on my tanks and never thought I would like black. After I upgaded the lighting a few weeks ago the blue was really bright, that's when I made the decision to go black. It really lessened the brightness in the room.
It was a bit of a pain.