Something

@-moz-document url-prefix(http://forums.gentoo.org/), url-prefix(http://www.starcitygames.com/phpBB2/) {
body, input, select {
   background-color: #eee !important;
}
td.row1, td.row2, td.row3, td.row3right {
   background-color: #dbdbdb !important;
}
td.spaceRow {
   background-color: #46357c !important;
   padding: 0px !important;
}
td.code, td.quote {
   border: 1px inset #ccc !important;
   background-color: #ccc !important;
}
td.code {
   color: #000 !important;
   font-family: "Bitstream Vera Sans Mono" !important;
}
th {
   background-color: #dbdbdb !important;
   border-color: #dbdbdb !important;
}
table.forumline {
   background-color: #c0c0c0 !important;

}
img[title="No new posts"], img[alt="Who is Online"],
img[alt="Post new topic"], img[title="New posts"],
img[alt="Reply to topic"], img[alt="Reply with quote"],
td[nowrap="nowrap"][valign="middle"] img {
   opacity: 0.7 !important;
}
td.cat, td.catLeft, td.catRight,td.catHead, td.catBottom,
td.catSides, td.rowpic {
   opacity: .6 !important;
}
textarea {
   background-color: #dfdfdf !important;
}
}