The Mulan is a girl who saved China against an assault of evil Huns. Who have not seen an adaptation by Walt Disney, should make it happen soon. And who wants to enjoy some nostalgia, can color Mulan together with her friends. There are almost all of them.
The developers have crafted this game really well. You can choose desired color and the game makes the rest of rendering according to realism based algorithm. Do not get bothered by details. The game makes this for you more accurately than you possibly would by brush.
You can make a beautiful picture, if you take care with color selection. This is one of nicest colouring books I have ever reviewed.