Comment 5 for bug 626968

It is easy to switch. The default icon theme is called "hicolor" and that is where applications install their included icons.

So you can override it if you put a file here in your home directory:

~/.icons/hicolor/scalable/apps/kupfer.svg

But after seeing the Faenza theme, I think the brown Kupfer icon looks great. The Faenza theme can also install a monochrome kupfer icon for the panel for you.

So I'm no longer that positive to switching Kupfer's icon to monochrome everywhere.