I was wondering if its possible somehow with oscape to rather than extract the texture vertex coloring of terrain from the esm or esp , import a custom made one into it to use and replace ?

Basically what I want to do is the following:

Take my own esm terrain and extract the heightmap data etc, work out with some tools outside new color maps to overimpose , then import those maps to replace the manual coloring of the terrain into the esm itself and in the lods ...
Is it possible?