Hi writers and devs in this thread.
Just 4 years later I found this!

I am looking for an exporter that can export (to .png) "whatever" colors or material used in SketchUp into 1 file, and so that it can be used in an OBJ file.

In fact, something similar to what Blender can do ( Blender call it "bake" or "baking")
is this possible, does something similar already exist, or.. would someone do it?

Regards