Emphasisng colors in my 3D tiles


I am looking for a way to emphasise specific colors (red colors for instance) in my 3D tiles. I do not have the ability to use batch table properties so I was looking for a way to do this using shaders, but with no success so far.
I would like to make the red colors bolder and the rest of the colors less visible (more opacity or greyer for example).

This is now handled in Emphasisng specific colors in 3D tiles