Hi!

I suppose you can produce a black/white image with FT3 then make use of it as a shade effect in Photoshop.

For example, I would set the FT3 height colormap to white or grey shade (whatever the height) and let's FT3 create the montains and valley shadow cast effect. Then I would open the exported image into PS and start painting over it to place forest and this colors. Playing with opacity and layer fusion settings, you would manage to get something not that bad. ^^

Regards,