Also, if you like the looks of a natural planted background, you can glue some cork board on the back (and/or sides?) using aquarium silicone. Then you can attach some real live plants to it by stapling with U-shaped galvanized wire... In time, the plants will grow (with proper lighting & water conditions, of course) which will make a naturally beautiful planted background. Any added driftwood placed into the tank would be even more highlighted by this natural background.
Cheerio and happy keeping!
Cheerio and happy keeping!