As a newbie, in my first use of iMovie '11 I encountered something I've never heard of. After importing into the Project library an old red discolored ciné film and having it edited in black and white, all clips in the project pane still remain in the same original red (as still is in the event library pane) unless I skim over a particular clip, which then in shown with the correct effect. The other clips keep to be red unless be skimmed over one by one. The in iDVD burned DVD holds the correct b/w effect. How come? I expected ALL clips to be transformed in b/w immediately altogether.