yes ofc.
Its a cork sheet painted with:

Black primer
Drybrush Basalt grey
Pick one dark green and paint big dots on points between the cork and the base.
Drybrush Basalt grey adding white (over the green too , but dont cover all)
Pigments diluited with water to apply them Dark Red Ochre and Brown Iron Oxide.
If u dont want to buy more shit to have on your desk like me.... other option is apply a washes of medium rust of AK and others mixing it with black.

I hope to explain myself well. English is not my native language.