Jacksons Chameleon stressed in cage?

[dreamscoping]

Hello everyone! I signed up here because I am possibly in need of some help. I have a 6 month old male Jacksons Chameleon. Whenever he is in his cage he is a dark brown/green, but the temperature in the cage is a cozy 75 degrees with a 55-60% humidity. But as soon as I take him out and let him explore, he turns a vivid bright green with some blue patterns on him.
Is something stressing him out? Should I redo the cage set up or add some live plants?

The picture is his current cage setup.

 

[wavingsnail]

More branches, more cover.

Pothos are pretty much foolproof and look nice. Live plants also help maintain humidity.

 

[dreamscoping]

Awesome! Thank you! Ill go pick one up right now!

 

[Virgil1972]

Pothos also grow pretty fast, and make sure you repot it with something that doesn't have any chemicals in it.

 

[dreamscoping]

Quick update. Just bought a small pathos plant and put it on the bottom of the cage, and am waiting for the vines to grow out. I re arranged the entire cage with more branches and cover.
He's still not quite a lime green, but I think hes not used to the new habitat quite yet, I'll give him a few days.