So, there's assignment I give out in Imaging; it's a fun one where you find some black and white line art, and color it. (I teach a good technique for this, which reinforces using masks. Solid stuff.) Usually students choose art of a favorite character, and then it's a digital coloring book.
While grading it, though, I've noticed that some students use random colors (almost always primaries, or just colors that don't relate to the original image at all), some use new pallets (sometimes nice, sometimes not) and some students rigid adherence to the original color scheme.
I find that interesting, 'cause when teaching the technique, I deliberately use very different colors in each class and never the colors of the original character, but I think it's a matter of taste. What about you, friends? If you were coloring in a drawing of a character you knew, would you just use whatever colors were at hand? Something new? Or stay traditional?