A cool idea matching the theme well, especially the alchemy part.
I have some chemistry knowledge but i dont think that helped me with this game xD
Most of the time i did really have a clue what i was doing, just trying to get the color the game told me to get.
Maybe it would be nice if, when trying to use an element on a tool, it indicates what the result would be?
Other than that, cool concept for a puzzle game.