GTK theme not applied when running gnome-settings-daemon

[sascha_silbe]

When running gnome-settings-daemon (it gets started automatically by upstream gnome-session), several UI elements look "odd" and some of the icons cannot be found:

1336484680.188363 WARNING root: No icon with the name computer-xo was found in the theme.
[...]
1336484682.013522 WARNING root: No icon with the name view-radial was found in the theme.
1336484682.027658 WARNING root: No icon with the name view-list was found in the theme.
[...]

Similar effects can be seen if GTK2_RC_FILES is unset, so it's quite likely that at least some of the effects could be attributed to the sugar GTK theme not being used. In fact, if I run gsettings set org.gnome.desktop.interface gtk-theme sugar-100 manually (which will change settings globally, not just for Sugar), things look much better, though the icons are still broken. So we probably need to figure out how to achieve all of what we did in gtkrc so far, without changing settings globally.

This is on an up-to-date Debian Wheezy system.

[sascha_silbe]

Home View when not running gnome-settings-daemon: Everything looks fine

[sascha_silbe]

Home View when running gnome-settings-daemon with default settings: Toolbar looking "odd", several icons missing

[sascha_silbe]

Home View when running with GTK2_RC_FILES unset: Toolbar looking "odd", several icons missing

[sascha_silbe]

Home View when running gnome-settings-daemon with GTK theme set manually with gsettings: Toolbar looking better, but several icons missing and search icon still different