User Interface Design: Internet Explorer 9's Dysfunctional Colorful Tabs

Perm URL with updates: http://xahlee.org/comp/ui_design_colorful_tabs.html

Internet Explorer has colorful tabs. Look:

Internet Explorer 9 UI tabs 2012-04-04
Internet Explorer 9's colorful tabs. 2012-04-04

With a casual glance, can you tell which is the current tab?

Here's Firefox tabs. Better.

Firefox UI tabs 2012-04-04
Firefox's tabs. 2012-04-04

The best is Google Chrome's tabs.

Google Chrome UI tabs 2012-04-04
Google Chrome's tabs. 2012-04-04