Nice graphics, simple but well made little game! I included it in my CGA Jam compilation video series, if you’d like to take a look :)

I really enjoyed funny graphics and the animation of Newton!

Anyway I think the game is a bit too easy. Avoiding bad apples it's not hard and there's no time limit between one carch and another.

There is a dark magenta that there should not be. You could obtain a dark magenta  combining magenta and black pixels on a grid.

Not a huge fan of the camera wobble. Like the changing colors when you collect apples though. I understand the the story has him sitting under the tree but I don't really understand why he can sit in the game? It's not bad if a little easy.

Game  stops spawning additional apples after about 30.  I don't think 30 apples is enough to satiate the hunger of Sir Isaac Newton. 

Agreed. your using loads of colors and not the specified 4

You can't mix the palettes - just one at a time

Mmm im pretty sure thats not the correct color palette