The video sequence editor changes the background to be after the end frame selected. Basically EndFrame+1. This may be a feature, however I think it would be better if the coloring ended at the last frame
System Information
Tested on Windows 8.1, Multiple systems, Windows 7, multiple systems, Linux: RedHat 6, Ubuntu 14.04.
Blender Version
2.75a
Short description of error
Exact steps for others to reproduce the error
To Reproduce: Open a movie clip from in the video sequence editor [Add] -> [Movie] -> SelectVideo.xxx. Zoom in on the sequence editor. Make sure [View] -> [Show Seconds] is disabled. Look at the end frame in the TimeLine panel. If the end frame in the TimeLine panel is set to 100, the background for the sequence editor will be at 101.