This is such a wonderful little game! Maybe even the chillest entry in this jam. It is astounding how much you managed to get out of an endless number of tubes and a few bouncy balls. The dynamic ambient soundtrack also does a really great job supporting the chilling atmosphere. I quickly lost myself in that rainbow-colored wonderland and found myself at ease. When I played that game, everything that bothered me before seemed so trivial...probably the most relaxing game I've ever played.
Two little suggestions:
1.) After you've caught a ball and the setting changes, sometimes the audio has a slight clicking noise in it, probably due to an audio file being abruptly cut off (or continued) before it hits a zero point. It doesn't happen every time and it wasn't that noticeable, but a very short fade-out (/fade-in) should be enough to avoid it.
2.) Would it be possible to switch from the "flying" mode to a "jumping" mode? That is, walking on the ground and being able to jump with some sort of greatly reduced gravity. I always like it when dreamy games (or levels) offer this type of movement, like you're in a giant bounce house in space~
But with or without those things, your game was really relaxing, fun to play and overall well done!