The themes available via the Appearance panel seem to be hardcoded in the unity-control-center source code:
unity-control-center/panels/appearance/cc-appearance-panel.c: static gchar *themes_id[] = { "Adwaita", "Ambiance", "Radiance", "HighContrast" }; static gchar *themes_name[] = { "Adwaita", "Ambiance", "Radiance", "High Contrast" }; -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to unity-control-center in Ubuntu. https://bugs.launchpad.net/bugs/1100670 Title: Cannot use third-party theme packages Status in Ubuntu Kylin: Triaged Status in unity-control-center package in Ubuntu: Triaged Bug description: The Appearance panel not allows to select third-party themes. Copy third-party themes to /usr/share/themes(or ~/.themes), the new theme does not display in The Appearance panel. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntukylin/+bug/1100670/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp