Hi Chris,
Thanks for writing in! The borders are on various place and elements and you need to add CSS for them individually.
For example, for the Topbar,Navbar and boxed layout you need to use :
.x-topbar {
border-bottom: 1px solid #f54;
}
.x-navbar {
border-bottom: 1px solid #f54;
}
.x-boxed-layout-active .site {
border-color: #f54;
}
You need to do the same for sidebar, footer etc as well where you need to change the border color.
Hope this makes sense.