Great job for your first game! 🥳
The orbs fell somewhat too fast for me to react to color changes in time. Maybe consider having them fall at a steady speed w/o acceleration, and only have three colors. Then I would be better able to get under them in time, and any color would be at most two Space bar taps away. If you want to go crazy and have two levels, you could have the first level be only two colors, so we get used to the mechanics.
I hope you come back for the next jam!