As noted previously, coloring comics was a two-step process performed by two different people.. The colorist indicated which colors should be used, but the separator did the actual, physical task of stripping the color separations. This is why there were often errors in the colors printed in old comics; either the colorist made an error, or (more likely) the person doing the separations made an error do to being in a hurry or simple inexperience.
- White People: Y2R2
- Conan's Skin (redder skin): Y3R3
- Black People: YR3B2
- Hulk's Green Skin: YB2