Hahaha, looks like the writing is on the wall, you'll have to repaint.
Oh well dude I tried to save you some rework.
For the record though, I think the rest of you are all nuts. When the tank has water in it, I guarantee nobody will be looking at the walls saying "Boy too bad you made this red." It's a reef tank for crying out loud! Nobody looks at the walls, it's all "Ooooh, what's that shiny green round thing? THAT'S SO COOL!"