Very fun game, seems well polished and has the potential for a lot of variety in the gameplay. Well done! 

One suggestion I thought of was: changing the text colour for the instructions to match the colour they are for would help for quick readability

E.g. "When I touch red" if the word "red" was written in red font then it would be a lot quicker to identify which is which

Genius idea! I loved it! Just quick suggestion: Use less text in the tutorial, because most of the players will not read long text!