There's an Ubuntu variant of Nautilus called Elementary Nautilus which aims for a tighter and sleeker Nautilus as opposed to the stock GNOME one. The modified one is really good, sleek and has RGBA (transparency support) through Metacity compositing enabled.

I've created a set of RPMs and they should be building on OBS anytime now. Wanted to get the community's opinion on this modified nautilus build. Screenshots follow...

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