Hm, I like to have a shortcut for gcolor2 on my panel, but when I changed GTK-theme (now a black panel), the original gcolor2-icon looked terrible. So I decided to create a newer one, and this is the result. The package contains a 48x48 PNG and a SVG-version.

On deviantArt: http://nielssonnich.deviantart.com/art/New-gcolor-icon-SVG-88720981