This is very cute, and I love the sound effects!
Some of my comments:
I had to get a blue and I thought I hit a blue! Then I realized it was a slight shade of blue off. I was about to suggest maybe make it more color-blind friendly, but then I realized that we did issue the theme of Color Changes Everything haha
I accidentally went off to the rightmost side and it didn't consider it a 'death' so I was wondering how long I could get through that loophole, but after the 2nd change of colors, it finally died when it went through the wrong color haha
I really love finding accidental loopholes, but then some of your rules still hold it accountable eventually
I had to click restart with my mouse but then go back to playing with the arrows on my keyboard. I guess it'd be cool if there was a keyboard shortcut for restarting the game, to make it easier to replay quicker