Hello richardhall;
In you scout.css, you must change the background of #header #nav for the menu and the #sidebar for the sidebar.
If you use Firefox, have a complement: Firebug, that help to make and see the change on fly. After modifies your css.
Regards.
PD: i see the color #3B1263 in sidebar and menu.
Clean the cache memory: ctrl + shift + del
In you scout.css, you must change the background of #header #nav for the menu and the #sidebar for the sidebar.
If you use Firefox, have a complement: Firebug, that help to make and see the change on fly. After modifies your css.
Regards.
PD: i see the color #3B1263 in sidebar and menu.
Clean the cache memory: ctrl + shift + del