The red LEDs look great against the all-black backdrop that is the Enforcer. The left shows the Scythe Susanoo cooler, claimed to be the world's largest, and it fits EASY in the Enforcer. The only "modification" needed was that the rear exhaust needed to be removed. As I mentioned, cable management was a dream. What you see in the picture was done rather hastily in about 15 minutes, and with a little extra attention basically every cable could easily be routed almost completely out of sight.
Here is an additional 200mm red LED Coolermaster fan to the top as an exhaust. The lighting looks great on the case overall, and it moves a ton of air and it's very quiet, I fell quickly in love.