What is the model of the Display your trying to output to? If you have went through multiple attempts to troubleshoot the cable then it may not be the cable at all. I'm getting the feeling that it has to do with the display's output device. Have you reset your screen? Power off the Display device completely. If there is any type of reset or format button, start there. I've read other instances of TV screens not showing true color, but rather a distorted coloration of the image. Some people have reset there device and the issue was resolved. Sometimes the video signal's color gets off course and may need to be reset so the signal can realign itself back to its original hue. If you can discuss a little more detail about model numbers and methods of troubleshooting that you have already tried, then I might be able to help you out more.
Ben
Lead AV Tech