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

.tabbrowser-tab[label~="Google Mail"][label^="Inbox ("] .tab-icon-image,
.tabbrowser-tab[label^="Google Mail"][label*="Inbox ("] .tab-icon-image

{
padding-left: 16px;

background: url(data:image/x-icon;base64,R0lGODlhEAAQAPcAAAAAAEFxuGB9qkd5wkR/w1uIt0uDxE2JxFOGxVOJxFCMyFuGyVyMyWKPzGaPzHWZ0Ymp2p2z1ois4o2w45a145i245y/7ZW88KC33KG/6Z7B8KjF7LLK67LN8bvQ7LvV987a68Lc+svf+NHi+dPl/dbk+dTm/dfo/dnk8d7o99np/d3p+dzq/t/s/uTs9ODq+ePs+eHt/ebu+eTv/urv+Ofx/uzx9+rz/u3z+Oz0+O71/vL2/PX5/Pj7/fn8/wAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAACH5BAEAAP8ALAAAAAAQABAAAAi8AP8JHEiwoMGDCBMOjADhgYMGDRhITIAAgQEEBQRg6LHDh8ePIHfQKPBgB4UVOlSwaBFjxo0eLySgUPCgR4eTO1rWeClDwoUcChz0IHHzBY8bOnzImKDhAw4FC3qcMLEBAgyPMiBYCBHiqYEeKkZw2FAhRYoKGzaEEPF0QI8RHkac+JAhwwcSIjiEsKEgAA8PJVoIZkGYhYm8LvricLGjMY/Hj3v0sAEiY4AAAwgQMGDggOcDCRJkVEiadEAAOw==) no-repeat !important;
}

.tabbrowser-tab[label~="Google Mail"][label^="Inbox ("] .tab-text,
.tabbrowser-tab[label^="Google Mail"][label*="Inbox ("] .tab-text
{
color:blue;
font-weight:bold;
}