I've actually taken some pictures recently of Redbirds with the WHITE-RED combination. (Coming to come to my web site soon. I'll put up a post with a link to indicate when I have them up.) Mostly on the 7 line, and probably one on the 2 line, too. I know from Korman's site that such a combo indicates a local train on the 7 line (To Times Square or Main Street, depending on direction), but no such combo for the 2. I think I might have seen a train carrying GREEN-RED on a storage track by 111 Street, which indicates the express. (YELLOW-RED indicates to 111 or WPB, I haven't seen any of those.) I wonder why those marker lights are suddenly popping up.