Concept - Chromium Tab Preview

I've been using Google Chrome for a long time now, and it has become my favorite browser. It opens nigh instantaneously, it runs fairly well, and it's constantly evolving. The one problem I have with Chrome as compared to Mozilla Firefox is its lack of flexibility. There's only so much one can do with extensions. But, here's a concept anyway.

Okay, tabs perveiw; a very under-stated and underrated feature only available on stock versions of Opera. But it's always the same; just a window dropping down from the tab to show a miniature of what it looks like. But this is different. The idea is, you hover the cursor over the inactive tab and the active tab's content becomes transparent as seen above.

It took me a while to figure out how to do this in the GIMP, but here it is.

Comments are encouraged.