+void
+RouteGroup::set_rgba (uint32_t color) {
+ _rgba = color;
+
+ PBD::PropertyChange change;
+ change.add (Properties::color);
+ PropertyChanged (change);
+
+ if (!is_color ()) {
+ return;
+ }
+
+ for (RouteList::const_iterator i = routes->begin(); i != routes->end(); ++i) {
+ (*i)->presentation_info().PropertyChanged (Properties::color);
+ }
+}