@namespace url(http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul);
.autorepeatbutton-up:not([disabled="true"]):hover, 
.autorepeatbutton-down:not([disabled="true"]):hover {
background-color: ActiveCaption !important;
min-height: 15px !important;
-moz-border-radius: 8px !important;
}