I need room decorating ideas/advice?

Well...I like metal music and a lot of people consider me kinda metal scene-ish?? or whatever.

So I wanted like a cool room with like posers and crap.
Any ideas for the color theme and comforters??
Like anyone know any websites where they sell good teenager comforters for people like me?
Update: my favorite color is navy blue :)
Update 2: favorite bands are nine inch nails and slipknot.
15 years old.
Update 3: I spend a lot of time in my room I guess.
I'd like it to be both convenient for sleeping and hanging out with friends if thats possible. lol
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