For only one day, this is pretty fun. Short and sweet challenges that made me want to complete them all (the switch took about 10-11 tries lol).
As far as feedback goes, I would say giving the player a way of knowing that they properly clicked on a button. There were plenty of times during the switch difficulty where I though I clicked the first button of a pair, but I never did. One way I would try and fix it would be to utilize more distinguished color choices and then giving clicked buttons a bright(glowing) outline to indicate that they were pressed.
Great work!