sorry- I should have added my congratulations too!
I was going to suggest something zingy- like raspberry and lime .... because there won't be much of it visible, but it would brighten the place up.
Obviously, I don't know your personality, so you may be more of an F&B person, sorry!
West facing should be lovely though- can get away with subdued colours I should think.
Do people have to come to your office, or is it private? that may have some bearing.