tymesh- take colour from underlying mesh

[tyFlow]

I don't think anything other than the current implementation would yield good results. The closest alternative would be to sample colors and apply them to vertex color channels...but that won't give you nice interpolations the same way simply sampling UVs would. The colors would look very splotchy, unless your tyMesher is incredibly densely subdivided.

I'm not really sure I understand your masking suggestion.