Rated 5 out of 5 stars
I tried various other Firefox themes shortly after Firefox was first released. I quickly settled on Curacao.
Anything else doesn't look right to me now. It's gentle on the eyes yet a little unusual, the icons are crisp, yet the toolbards don't hog a lot of screen space -- so vital on laptop screens.
If this theme ever stops being supported, I don't know what I'd do!