@namespace url(http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul);

tab:not([selected])
{
color: blue !important;
}

tab:not([selected]):hover
{
text-decoration: underline !important;
cursor: pointer !important;
}

tab[selected="true"]
{
color: black !important;
cursor: default !important;
}

tab[selected="false"]
{
color: purple !important;
cursor: pointer !important;
}

tab[selected="false"]:hover
{
text-decoration: underline !important;
cursor: pointer !important;
}

tab .tab-icon,
tab .tab-close-button
{
cursor: default !important;
}