Change Pages background color

http://new.sheboygangreenscape.com/six-step-maintenance/ 1. How do I change the text color in here as well as change the background color of the box that has the text? 2 How can remove the empty space between end of the text and the footer. There is a white line in there too that i would like to remove. 3. how do i get the the footer padding reduced as well so the the footer is not so tall?