Good design, but gameplay difficult with character not visible for some of the game. That said, a good concept and one that should encourage the developer to continue on the developers pathway.

Very good implementation of this design, good use of the colour idea.  Just a couple of things to bare in mind for the future, make your instructions more explicit, there is no where, where it tells you how to change colour.  And you missed an opportunity to use the platforms you put in, such as putting multiple colours at different heights giving the player a choice as to which barrier they go through.