Last week I had comcasy come install HD on my HDTV monitor. I have just begun to notice that whenever something red or brown comes on the screen it will get distorted and kind of blurry. I can't seem to access the HDTV settings on my cable box, and all I know is that the box is big, silver and made by Motorola. By the way I live in the Boston area. Any help would be greatly appreciated.