Background of one of the Orchid's stages. Not sure in what kind of scenario would fit this... but I'm sure some people will find this usable somehow.
This is a HUGE background; other than palettes 2, 7 and status bar colors basically every (non-sprite) color is used, so in this way it's at least compatible with a vanilla FG and coins/question blocks. It also uses FG2, BG1, BG2 and BG3 (with some empty space in this last one). Keep this in mind.