Wow, those pics dont really show the colors very well at all. The main rock is much more of a charcol with light brown highlights.
I am going to add some vine-like roots to the overhanging root on the right. I have some small pieces of manzanita twigs that I want to try and use. Maybe if I push them into the foam and then Drylok them along with the faux roots? That way I can save from all that carving and still have the two pieces look the same. Has anyone ever tried that before?
I still have the Swiss cheese look to some of the greatstuff rock. The pores are often very large when you start cutting deep into the hardscape and then they become very difficult to fill in with the drylok. If the next layer doesnt do it, I may have to fill them in with some expanding gorilla glue to take up the spaces.