Here's the second stage of the jungle trees.
The bases were painted with Daler-Rowney 'System 3' Burnt Umber, then drybrushed Burnt Siena, then drybrushed Buff Titanium. I tend to use DR System 3 on terrain, as when it sets it retains a flexible finish, so if the terrain flexes at all (as the GW plastic hills can) the paint won't flake off.
The three colours I used equate to Citadel Scorched Brown, Bestial Brown and Bleached Bone, so everything should match up.
Next up is the plastic trees, then the ground cover.