If I get the question correct, the green numbers change with additional points in the skill. While the white numbers always stay the same.
EDIT:
*loads up game*
Oops, that was yellow.
Green means the current bonus you get with your current equipment boost. So if you have +1 for a skill from an item, look at the green text to see what has changed.
Last edited by Hassat Hunter; 02/05/11 11:47 PM.