Automation Blocks - Merge same color values

Hello,

When I import several shapes with the same colors from Adobe Illustrator to After Effects as the same layer, there are many similar colors in the same group.
I have to delete them manually because when I link them all in the color controls, there is too much expression in the project. Is it possible to merge the same colors in the same group this way?

Thank you very much in advance for your answer.