I'd like to share this website because I think it's an awesome resource to see different types of nurseries done to get inspiration from. You can search by style, colors, boy, girl, for twins, etc....
HGTV Rate My Space
I absolutely love this nursery even though I'm not a Beatles fan. I love the color of the walls and the stripes. I love the black "scrolls" on the walls. I've seen lots of black and white nurseries with accents of fuschia, lime green, purple, and/or blue. I love the look, so I'm thinking I will go with it!
I also saw this twin nursery where the Mom split the nursery into two for her b/g twins. (She said she already had 3 boys, so with the one girl she was getting it was important for her to have a Pink Space. But, it was also important for her twin son to fit into the room.)
Now, I don't like how the colors are literally split down the wall. I think what I would like to do is to paint two walls one color and two walls another color - and have the black and white bedding. I think I'd like to go with purple and turquiose for g/g twins or bold blue and lime green for b/b twins. That way the room goes all together but each twin would have their "own" color.