I'm on ubuntu 12.04/precise with GNOME 3.4.2, running an XFCE 4.8 desktop. I have gedit 3.4.1 with terminal plugin 3.3.4.
I'm trying to set my colour scheme to 'solarized dark'. In the screenshot below, the top half is a correctly set up gnome terminal. In the lower half, you can see the gedit terminal plugin - both displaying all ANSI colours.