Najlepiej zrób tak:
.ipsApp .cPost.ipsComment_highlighted:not(.ipsComment_selected):not(.ipsModerated)[data-membergroup="6"]:before,
.ipsApp .cPost.ipsComment_highlighted.ipsComment:not(.ipsComment_selected):not(.ipsModerated)[data-membergroup="6"] .cAuthorPane_mobile,
.ipsApp .ipsComment_highlighted.ipsComment:not(.ipsComment_selected):not(.ipsModerated)[data-membergroup="6"] .ipsComment_header{
background: #ff0000 !important;
}
.ipsApp .cPost.ipsComment_highlighted:not(.ipsComment_selected):not(.ipsModerated)[data-membergroup="6"] .cAuthorPane .cAuthorPane_author,
.ipsApp .cPost.ipsComment_highlighted:not(.ipsComment_selected):not(.ipsModerated)[data-membergroup="6"] .ipsComment_meta,
.ipsApp .cPost.ipsComment_highlighted:not(.ipsComment_selected):not(.ipsModerated)[data-membergroup="6"] .cAuthorPane_mobile,
.ipsApp .ipsComment_highlighted.ipsComment:not(.ipsComment_selected):not(.ipsModerated)[data-membergroup="6"] .ipsComment_header{
color: #0000ff !important;
}