BuddyPress.org

Those two grey columns, as I mentioned above, is a background image added to the left hand side of the container div in certain pages within that theme as I showed you with the selectors. You can always replace the original background image with another in your style sheet.

Since you deleted the usersbar.php and optionsbar.php which have their own divs, you would need to replace them with your own div containing the information you want for that area and style accordingly.