A new Faenza Icon theme version has just been released: 0.9.1. This is just a minor bug-fix release, but it does bring a new variant called "Faenza-Darker" which is great for dark themes (dark buttons / Gnome Panel) with a light toolbar.
That's pretty nice because now you don't have to manually tweak the default Faenza Icon theme or use unofficial variants if you just want to use the original Faenza but with various light/dark icon combinations.
Faenza-Darker is the third official "dark" Faenza, along with "Faenza-Dark" and "Faenza-Darkest". To understand the differences between them, take a look at the screenshots below (read the description in Gedit too):
Install the latest Faenza Icon Theme 0.9.1 (the PPA version says "0.9-ubuntu2" but that's 0.9.1) in Ubuntu using the following commands:
sudo add-apt-repository ppa:tiheum/equinox sudo apt-get update sudo apt-get install faenza-icon-theme
If you're not using Ubuntu, you can download Faenza via Gnome Look.