WOW. DA has made big changes right this minute. Nifty! The navigation seems absolutely intuitive and futuristic. U like it??? So far, I do.
This stage of the process has some cool peculiarity.
There is NO PAINTING INVOLVED. All I have done (trust me) is color adjustements right on my graytoned layer.
All colors in the known universe can be reached using PS modifiers. Complicated things. Such as...
(LOL. sounds like a joke, but yeah, is almost that simple)
First of all, don't forget to colorize your layer with any overall color. If you don't do that, grays will remain gray, even if you headbutt your monitor. For colorizing, I recommend Variations.
Other tools used:
Polygonal Lasso Selection
BTW: Still with two layers. Lineart below, colors above (multiply).
The fun has just started, 'antsies.
FOR TEACHING PURPOSES, THIS WILL BE HIGH-RES AND DOWNLOADABLE.