The music and the stage go well together. Color Zen is a chill puzzle game about shapes and colors, and Electroplankton is another chill game about creating your own melodies with musical leaves.
My choice of fighters was simply to try and emulate the rainbow, though not in its well-known order.
Super Smash Bros. Ultimate Statistics For NoBillsOfCrashDamage
At present, NoBillsOfCrashDamage has 116,979 views spread across 571 videos for Super Smash Bros. Ultimate, with the game making up over 1 day of published video on his channel. This is 18.16% of the total watchable video for Super Smash Bros. Ultimate on NoBillsOfCrashDamage's YouTube channel.