Struggling with colors on vegetation

 

Still struggling with the colors on vegetation on dunes. Most of them are actually all greens but a little orangish due to sunset light. But some parts are actually orange color by themselves. Since orange and green are complementary colors, it's difficult to mix the final colors. Some kind of illusions are probably necessary, which I don't know how. 

Instead I was working on adjusting shapes of vegetation based on values. I think I have to leave them for now and will work on refining three shapes to be more interesting next.