Yeh, this definitely took me a few tries to get used to Lol, I think many would benefit from a tutorial with a 'slower' song. Other than that, this game looks really polished. the sfx are nice too - I found the scrolling when choosing a colour to be a satisfying sound Lol. I did manage to complete the first stage, but none after that ahah. I do agree with others that it could be more forgiving, and lives would be a good idea.
In terms of visuals, i liked the mouse pointer and trail (very smooth - but faster mouse movement could do with an increased rate of trail spawning). And the shape design was cute, overall it looked really clean. Gg
Also, i just saw that you made this in scratch, that is seriously insane.