TST Colored Tabs addon adds colourized background to each tab based on current tab domain, so all opened tabs with same domain have same colour background in list for easier tab navigation.
Needs the Tree Style Tab extension installed for working. After installing TST Colored tab - simply close and open "Tree Style Tab" bar for activate it to new tabs, or restart browser.
Idea is based on ColorfulTabs addon, that not works with Tree Style Tab.
