How to understand skills and attributes numbers

[Soycapo]

What is the difference between the blue and the yellow numbers on the skills and attributes pages? And what are the attribute numbers in parentheses for? I don't understand how to read all of that..

[Elendil / Redshift]

Blue means it has been changed by an effect. Usually positive, but can be a penalty. See the active effects screen for details. The number between parentheses are the base values, without the effects.