I like the idea of changing my my background to the night sky, but it looks to obviously tiled. I'd fix it by making it an HD picture, or make the purple clouds more tessellated and smooth. Also, I might be interested in getting grass or forests if they were darker.
In addition to that: some ideas for backgrounds: Wood(tabletop, or log cabin style), Gold, Chainmail, cobblestone, autumn leaves, Ocean, Cloudy sky, cloudy night sky, money, American Flag, LED lights(arranged in hex faction), overhead lights, money, grass with dirt patches, black, scattered bullet/ shotgun shells.
remember to tessellate them, and thanks for your time.