If it's a sort of Iraqi, desert terrain, you should add in a orange or brown fog.
(Brown: Use dark red and half the 2nd value put 0 for the 3rd)
It's pretty average. You need more tile variation - I think barrens or village is the best fit for this, maybe village fall. The plants need to be tinted accordingly to match the ground tiles and the doodads, so I'd suggest a reddish gray.