You should go matte gold and black on your tank and throw a like a 8 to 10'' white circle in the middle of the tank and stick your fav number on it in black. I think that would look sick. But matte black and gold or just gold would look really good on there.
This was just quick and terribly done but, this is like what i was saying. Even making the white backing behind the number red or matching gold would look cool. I'm just throwing ideas out there though. I just like stuff like this haha.