Been working in overall feeling of the game. I started with the main character and then scenario items. I have desaturated them quite a lot, resulting in something less infantile....
RELOADED VERSION, (PC-STEAM, 2016):

VS.
ORIGINAL VERSION, (ANDROID, 2013):

Remember that's the first level, when things are nice and happy... Then the mood of the game changes to something not-so-happy...