I just love the intro, amazing haha.
It is a great beginning for a game. Cute art style and good audio.
I am really bothered I could not figure out the logic of switches to open the door at level 3... Even after knowing it has something to do with color... Guess I missed something.
To point out what I felt it is missing:
-A way to leave the game while playing (Quit button + Menu button), it really add something in my opinion :)
Either from that there are a few bugs I noticed (volume button only works for menu for example), but as the game is not finished it is understandable, and really not a problem for Game time!
Conclusion: good start !