>>7606134Your colors are way too desaturated. You really just can't get that color red from multiplying on that blue. The values on 5/6 and 7 are identical, only the color changes.
Anyway. When you use the multiply process, all your base values should be the same, otherwise your color picks are just arbitrary. If all your greys are the same, your colors on the multiply layer all perfectly correspond to the correct color in neutral white light. That's why you color with multiply in the first place.