Originally Posted by mwb:
You can, but I always figure that the amounts of glue (diluted or otherwise) used for scenery flora and fauna will soak in and seal everything. Only reason I see for using paint is to hide the white plaster that I missed with scenery materials.
Actually, I typically paint mountains (especially rock work) flat black first, and then layer on the scenery and dry brushed rock colors. This "back-to-front" approach is analogous to the way paintings are done and is generally more effective at producing good "shadows in the cracks" effects than the often-recommended method of ending with a thin black wash.