Changing the width/color of the sidebar margins

Right sidebar:

#right.widget-area {
  border-left: 1px solid #FFFFFF;
}

Left sidebar:

#left.widget-area:after {
  border-right: 1px solid #FFFFFF;
}

Right sidebar:

#right.widget-area {
  border-left: 1px solid #FFFFFF;
}

Left sidebar:

#left.widget-area {
  border-right: 1px solid #FFFFFF;
}

@rdellconsulting

Been looking for this. Thanks for sharing.

Thanks @rdell !
It worked fine ??