Yes it was a flat background, I no longer have that tank actually, I sold it on Craigslist. I originally paid $10 because it leaked but I had some experience revealing so not a problem for me, sold it for $120 and bought a 55 gallon tank and 4' fluorescent light with the money for $25.
great assortment of fish! I love to see people keeping NA natives and some of the less common species. When I was your age I had 7 fish tanks, all in my bedroom. Now I'm in my 40s and still a fish nut. Let me tell you, it gets better as you get older! more space, more money, your own place....