It's still not clear what the exact result you want is.
If you merge those three components, only the section I've highlighted is derived from just yellow parts.
Would that be the only yellow result, or would something be yellow if ANY of the sections was yellow? Or do they all get averaged? That's potentially 1x2x3x4x5=120 colors I think.
If they don't get averaged, how are they prioritized, what color beats what color?
And again... do you need to animate these merging together?