I actually like the way this looks woth the limited palette. Fun to play in short bursts, but gets a bit stressful for my taste after a while. I appreciate the animations, but the refill-at-the-river animation might be a bit to subtle and take a bit to long. I actually thought the game had cfrozen at my first couple of attempts.
I added the animations to make the game feel more alive, make it so that there is always something moving on screen. It is odd to me that you thought the game had stopped, because there is always something moving.
Well thank you for your feedback, I will try to make the animations more see-able in future games.