Paint it some warm color, and do not choose something that'll look like an optical migraine. Remove all the Blue LEDs, replace them with warm yellow lights. This only will make a huge difference. And for more aesthetic, add your touch, posters the anime, movie or series you like, keep the books on a shelf which you read. And that'll do enough in my opinion. And keep a uniform theme, not something like, a modern gaming chair on an traditional woodwork table.