+ }
+
+ VideoContentList vc = _parent->selected_video ();
+ shared_ptr<VideoContent> vcs;
+ if (!vc.empty ()) {
+ vcs = vc.front ();
+ }
+
+ if (vcs && vcs->colour_conversion ()) {
+ _edit_colour_conversion_button->Enable (!vcs->colour_conversion().get().preset());
+ } else {
+ _edit_colour_conversion_button->Enable (false);