Whats the color of the background? Like the code?

Hey! My names deqae & I found this from deviantart & thought it was cool looking so yeah. I'm downloading the game now, uhhh, is there anything I need to know? I prolly sound nubtastic but I want to make sure I know about what it is I can do and stuff. I got the most of it from the site but yeah. Anyways, I want to meet new people and stuff so just let me know if you want to know more about me!