Making Firefox more like Opera (what!?)

After playing around a little with the latest version of Opera (it was a weak moment) I decided I had to have an extension that would do the tab previews. After fumbling around awhile, I came upon Tab Preview (http://ted.mielczarek.org/code/mozilla/tabpreview/). This extension will display a quick thumbnail of what is on a tab when you hover your cursor over it. While searching for that extension, I also came upon Colorful Tabs (https://addons.mozilla.org/firefox/1368/), another cool extension that breaks up the monotony of the Firefox color scheme. I know, I know, why not theme the browser? I have yet to find one I like and that is consistent enough across the tabs and toolbars to continue to use. The one that I do like a little is macfoxIIgraphite, but it is a Mac theme and I will get tarred and feathered by my fellow contributors for using that theme.