  Does it have to have a theme, per se? I saw a really cool blue room on Queer Eye once that was blue (it was the BBQ'd toupe for those who watch). It had dark wood for the furniture and bed, etc- and the linen's were a white bedspread (you could go light blue here too)- and then the curtains were white as well. The walls were a very rich blue- but not overly bright- it was VERY cool. And for wall decor, you could pick a theme- maybe even abstract art (think "Wassily Kandinsky (artist)"). And have small prints framed all around the room to create a border..... 
