See, I think that is a weird way to think of it. The color highlights and shading in comics is to ensure characters in all one color don't look like big shapeless blobs on the 2D page.
In 3-D in person you don't need all of that crazy shading and highlighting because the natural light does that for you automatically.
Its the very reason I think so many of McFarlane's mini Marvel statues look awful... he tries to recreate comic shading with big swipes of black paint and the figures just end up looking dirty and stupid.
Shading on a 3D figure has to be very subtle to work, since the contours of the figure and the light source make real shading without paint.