Background color "sub-pages" and "whole menu bar"

Hi there

Finally our blog looks quite as it should. Two more questions remain as we've not been able to fix the issues ourselves. Look at this page: http://www.abenteuer.ch/?page_id=57

There Background of the whole menu bar (in grey) is not equally "high": after the last menu entry to the right ("Wichtig zu wissen") there is a difference in the height of the grey background of about 1px at the top and the bottom. Does not change if I set the background color of "Header 2" (at least it does not at its bottom; at the top its fine then because the whole menu bar flushes with the header image).

Then we've not been able to change the background of the available submenu-entries: on this page ("Touren"), which is active right now, all sub-menu-items also come with the blue ("active") background. Is there a way to change the background of these items too ("background color: hover" does not work here as the top-menu is active...)?

Thanks and all the best from Zurich
Goofy