I would love to see this guy fire up. You should get a mirror and hold it infront of him and see how he feels about that

Also If you can give him a good cool down at night his colors will be intense also. Ive noticed this with all my guys. It seems they are totally relaxed around 65 or so. That is when D.H. will get pure yellow with nothing but bright reds. I cant wait to see him in another 6 months!