Sets a symbolic color for a widget.
All other style values are left untouched.
See gtk_widget_override_color() for overriding the foreground
or background color.
the color to assign (does not need
to be allocated), or NULL to undo the effect of previous
calls to gtk_widget_override_symbolic_color(). [allow-none]
Since 3.0
Sets a symbolic color for a widget. All other style values are left untouched. See gtk_widget_override_color() for overriding the foreground or background color.