Controls: You could have simplified these. Maybe if you used WASD to move Up,Down,Left,Right, and then used space bar for EVERY other interaction, the game would have been closer to what we are all used to (which is important).
Difficulty: It would have helped a LOT of you used colors that better matched what I was trying to mix. We all know that Yellow + Blue = Green. Cyan + Magenta - what? lol.
Gameplay: *SPOILER* The theme really started long after the gameplay had been figured out. It took a while to figure out that the OPPOSITE colors mixed together would result in the color that I wanted. In this case, 5 colors to match may be a lot easier.
Timing: Once you figured out the puzzle, the game shifted into a different game... the game was now "do it fast"... which was too fast even on easy.
Theme: The theme didn't really start until after 1) You figured out the puzzle... 2) You did the puzzle fast and 3)(theme), you had to just keep doing (endurance).
Winning: Easy could have been a more simple puzzle to slowly introduce us to the game. Then - a GRAND SPECTACLE for winning your game should have occurred. Instead - I didn't get as much reward at the end as I would have hoped for. If you gave a mini spectacle for easy, and let us know that a better spectacle would come on hard, it would keep me striving for more!
Overall - I beat the game, it had good aspects to it, and if you made some necessary changes, you have the potential to have a very addicting game! Congrats!