Liking the current white color on the walls, but here is one idea with a slight gray tone.

I think it needs color. how about yellow?

I would start by painting the room a muted green to go with the floor, and then I'd add a large panoramic picture above the headboard.

Here are a few colors that would look nice:

http://www.behr.com/consumer/ColorDetailView/410C-3
http://www.behr.com/consumer/ColorDetailView/400D-5
http://www.behr.com/consumer/ColorDetailView/400D-4

Be sure and click on the Preview Color in a Room button to see how the color looks in various rooms. You can add up to 10 colors, and it helps you visualize how the different colors look in a room. You can choose from a variety of room types as well.

Use as a color scheme the color plan called 'Misses Lilian and Viola Lilac'.
The color plan, including color codes you will find here: http://www.farbica.com/colorplans/coloring_free.html

Walls and ceiling: As proposed in the color plan.
Door, Skirting: White.
You may use the proposed lilac as a combinational color for textiles.

Happy coloring!
Paul Zoller for Farbica

Just did my master bedroom in BM Cliffside Gray for walls and Brilliant White for ceiling. It looks soothing and classic. Love it!