Looks great in Clearlooks-Phenix theme! Bewertet mit 5 von 5 Sternen

Only problem is it doesn't support the app tab notification feature. Here's some CSS code I use in the Stylish extension to add that back, feel free to use:

.tabbrowser-tab[pinned][titlechanged]:not([selected="true"]) > .tab-stack:before {
content: "" !important;
display: block !important;
margin: -6px -6px -3px -6px !important;
background-image: radial-gradient(circle farthest-corner at 50% 3px, rgba(233,242,252,1) 3%, rgba(172,206,255,.75) 40%, rgba(87,151,201,.5) 80%, rgba(87,151,201,0)) !important;