the hell?
thats just silly and complicated. espacily for animation...are you expect to all this bullshit for every single frame?? maybe thats helpfull for an artwork. but not animation. thers just a very easy way draw lines. fill them with coloring. take brush tool make it so that it draws under lines. then take a darker colore of the color you brush tooles on it. and colore it. everything in 1 layer. and it will take only like 5 or10 minutes time. not all this complicated things...
thats what I think