Painted the front panel white.

Painted front panel, as well as top exhaust filter white.

Lights are usually kept blue.

I noticed that it was getting a little warm under the PSU shroud. I bought this little Noctua NF-A6x25 PWM fan to give a little extra airflow to my hard drives. I've noticed others have cut a small hole to fit a 120mm fan without removing the whole cover, but I wanted to keep it a little more hidden, and have airflow only for the hard drives. So far it has helped, they don't get over 33°c when they used to get to around 45°c.

Custom sleeved all white cables.

This is such a long process if you haven't done custom sleeving for long. After a lot of research, wrong cables and many hours I was finally able to get all my cables done. I'm very happy with how they turned out, but I would suggest just buying them if you're planning on custom for just your PC.