Want a certain object in the frame to be in color, with the background black and white? GeniusDV offers one method to achieve this effect (link opens in a new window). Just to keep you thinking: If your frame is static, and you don't mind doing a little work outside of Media Composer or XPress Pro, you could also create a real-time matte using Photoshop. Another method is to use Avid Media Composer's / Symphony's AniMatte effect. The benefits of AniMatte are that you can create the matte right within Avid, and that the shape and position of the matte can be animated.