'Solar Forest' Designs

For the outside world in my animation I wanted the look of a sweeping country side and a forest but adjusted to a futuristic world occupied fully by robots.

I then thought of the idea of trees being solar panels instead. I used a lot of blues instead of greens to avoid a natural look. As the animation takes place 200 years i the future where robots have taken over, I figured there wouldn't be much living things around. I was unsure whether to make the designs look very logical and ordered to match a machine like order, eventually I chose to keep them looking like a scattered forest, my reasoning being that the robots a didn't recreate the world so much as they adapted it to be robotic. It is almost like a big robot blanket has covered the world.