Techniques color adding hexadecimal values

As a user that uses ATT&CK navigator and it matrices as a purple team reporting tool
when creating a matrix from composition of other matrices
I would like to have the possibility of being able to get the color of the addition of the hexadecimal color values of the cells, instead of the score.

This way the light red plus light blue would be light purple, ligh red with strong blue, would be a less strong purple. With this functionality we will not lose the color gradient information. Also a red cell plus a white cell will be red, insted of having it purple using the scoring addition with gradients.

Losing gradient colors can done setting just 3 values red, blue and purple and giving 1, 2 and 3 score values.
I hope it makes sense :)

Thanks

Start by locating the ATT&CK Navigator matrix-composition flow and the handling of cell colors and scores. Reproduce the reported combinations, including light red with light blue and red with white, then define completion as preserving the combined hexadecimal color gradient instead of using only the summed score.