So I have been thinking about building a plywood tank for some time now and have recently come across 2, 60"×18"×5/8" tempered glass sheets. They were intended to be used in a hockey rink and are extremely strong. The only problem is they have a slight green color to them. Have any of you used or seen colored glass in an aquarium before? Will it be a waste of time using this glass? I am planning on painting the inside of the tank black so will that hide the green color? Thanks for any input.