Zaja, you forgot to mention that you need to add the same code in skin/skin1.css to /skin1_admin.css .
Not doing so will break (make the boxes disapear) around the admin menus.
add to /skin1_admin.css
Code:
h1,h2,p {margin: 0 8px}
h1 {font-size:13px; color:#B70000}
p {padding-bottom:1em}
#angleMenu {background:#FFE595}
b.rtop, b.rbottom {display:block; background:#FFF6DB}
b.rtop b, b.rbottom b {display:block; height:1px; overflow:hidden; background:#FFE595}
b.r1 {margin: 0 5px}
b.r2 {margin: 0 3px}
b.r3 {margin: 0 2px}
b.rtop b.r4, b.rbottom b.r4 {margin: 0 1px; height: 2px}