GNOME implement it by using a metatheme, with these informations :
[X-GNOME-Metatheme]
GtkTheme=Radiance
MetacityTheme=Radiance
IconTheme=ubuntu-mono-light
CursorTheme=DMZ-White
ButtonLayout=close,minimize,maximize:
Eventually, other items could added (panel background ...)
GNOME implement it by using a metatheme, with these informations : Radiance ubuntu- mono-light DMZ-White close,minimize, maximize:
[X-GNOME-Metatheme]
GtkTheme=Radiance
MetacityTheme=
IconTheme=
CursorTheme=
ButtonLayout=
Eventually, other items could added (panel background ...)