Public domain image - before (had to enlarge too). Of course this looks relatively straight forward. Easy! Just like coloring in a coloring book. *snort* Yeah - sure - famous last words.

And the after image. Getting the gradient angles right was only part of the battle.Each color is its own layer mask. Except for black and yellow they're all custom gradients. No flood fills. The black outline is four layers on it's own.

 

The red looks a lot better larger size - the highlight is a light peach color. That way I don't get the pink on the highlight transition.