Okay, thank you for the info, I appreciate it.
I have been trying the disp[lacer, but I found the result look quite bad.
Maybe I have to try to subdivide the polygons more evenly or I’m thinking of using subdivision surface and then weigh the sharp edges to keep the same shape.
The reason a colour channel is not an option is that I need to export the 3D model with the geometry in it for production.