"This is great metalic like back ground. I bought the large one for my 55 gal tank. I used the blue side and paired it with some blue Spectra Stone. Needless to say, my tank is blue.
The only problem I've found with this is the finish is not very durable. Both sides will chip/flake VERY easily. Once you stick tape to it, you can't take it off. So use lots of caution when putting it on and handel it gently. Maybe I should have gave it four paws just for that reason... And cutting it might be a nightmare too, but I would know that."