you can customize colour box tab.Follow these steps:
1. Login to your facebook account.
2. Copy paste this code into url addres browser on your facebook page(white box ,place where your type url addres browser)

javascript:void(document.getElementById('fb_menubar').style.background='red');

3. Push enter

Nb:if you want to change colour,change word "red",be "white"or another word like black,green,etc.

tolong comment n follow y.........