If the colour varies while you are watching the television, it is likely an indication of a problem with the television. The user is able to adjust the colour hue and saturation, among other parameters, but these changes affect the entire image, not just a portion of the screen. The colour should also remain stable while you are watching the television. You should watch the television over a period of time (e.g., 30 minutes) to see if and how much the colour varies over time. Some DVDs include a colour test signal to help owners set up their television or you can purchase a video calibration disk, such as Digital Video Essentials from Joe Kane Productions (http://www.videoessentials.com/DVD_NTSC.php). (If you have a CRT or plasma television, don't leave the test signal on for an extended period. Both CRT and plasma televisions are prone to burn in.) If you have a CRT television, I would recommend having it degaussed, since this may be a contributing factor. Regardless of the type of television you have, it may need to visit an authorized service centre to have the problem addressed. If it still covered under the manufacturer's warranty, any such repairs should be covered. Refer to the owner's manual or the manufacturer's web site for warranty service information.