Header Help

Hello all.
Love this theme except (sorry):
• image pic1: On home page I want to remove middle 'grey' bar. (This is the location of page links that I do not have showing).
• image pic2: In buddypress, I want to remove 'grey' bar, and 'light blue' bar.
- purple is 'top header' under 'Theme options'
- light blue is 'main header' under 'Theme options'.