I figured out the problem, in case anyone else encounters it, the solution is to select all the video clips on the timeline to the end and the go into the Video Effects filter panel in Vegas, select Broadcast colors, choose the amount of leniency you desire (I choose lenient 7.5 and Studio to RGB 235) applied that to the entire timeline and then rendered the movie and recompiled the DVD in DVD Architect. This eliminated the major color shift problem that occurred on my large HDTV after switching from watching the DVD to a cable TV channel.