Comment 0 for bug 1094511

Depending on the current Gtk theme, both rulers render with a solid black background with GTK+ 3.6.x.

With Inkscape 0.48+devel r11997 on OS X 10.7.4 (GTK+/Quartz 3.6.2, gtkmm 3.6.0, glib 2.24.3, cairo 1.12.8):
- The issue occurs with the default Adwaita theme from gnome-themes-standard 3.6.2 as well as when using no specific theme at all.
- The issue does not occur e.g. with Ubuntu's light themes (Ambiance, Radiance) for Gnome 3.6 (both based on Unico theme engine), and with latest version of Zukitwo for Gnome 3.6 (based on Adwaita theme engine) [1].

With Inkscape 0.48+devel r11997 based on Gnome 3.4 (GTK+/X11 3.4.4, gtkmm 3.4.0, glib 2.32.4), the issue does not occur at all (independent of which gtk theme for Gnome 3.4 is used).

Screenshots:
Adwaita, GTK+/Quartz 3.6.2:
<https://bugs.launchpad.net/inkscape/+bug/1066808/+attachment/3469822/+files/1066808-filter-editor-r11997-GTK3-Quartz-3.6.2-osx.png>
Ambiance, GTK+/Quartz 3.6.2:
<https://bugs.launchpad.net/inkscape/+bug/1066808/+attachment/3470252/+files/1066808-filter-editor-r11997-GTK3-X11-3.4.4-osx-Ubuntu-Ambiance-theme.png>

Likely related: if the rulers have a solid black background, the background of previews of SVG files in the file chooser also renders with a black solid background (instead of white (GTK2), or at least a light theme background color (Ambiance, Zukitwo for Gnome 3.6).

---
[1] <http://gnome-look.org/content/show.php?content=140562>