When I first read the description I thought this was going to be yet another typical puzzle game about having an object reach a specific location/object.
THEN I discovered the mechanic used to achieve such goal.
I was gladly surprised to see such interesting twist in this variety of puzzle games. The mechanic used was very well used and it opens up lots of possibilities. Yes, the game is still quite easy, but that can be improved.
I seriously encourage you to consider a sequel to this. Add more colored potions! Perhaps tweak a bit the graphics. Try adding alternative goals in the levels (time limit, etc). You have something, here.
Good luck, and hope to see an enhaced version. Well done, man.