Yeah this was an accident for me... lol. I had extra laying around from a sample we did for our craft room. Just cheaped out and used that. ended up loving it for the most part. drawbacks are it shows the back glass better. Any algae will stand out versus the black back. It also hides some of the coral popping colors due to the way it makes the tint of the water shine. I loved it. But as i said, i will stick with black for the foreseeable future. Plus black always matches your wall color choices.
In the end, the AI's and the Radion's kinda glimmered more for me with the blue back. I loved it, which is why i wanted to share them both with you. Good news is its paint. So if you hate your choice, you can scrape it off and go a different route. That is, before you set everything up LOL.