For the defintion of blue would "Channel has mixture of HD and unconverted programs" be better just to make sure people know there is some HD on it?
In my opinion that definition would mark a majority of stations blue. Few channels are in 100% true HD all the time... And in reality most show some older shows that were recorded before the advent of HDTV, so they can not be "true" HD, they have to be remastered upconverts. Those stations do a real good job though so the old stuff looks great most of the time, unlike TBS...
While I appreciate the attempt to show the differences between channels and the HD they show the only fair way to do it is mark it as true HD if ANY true HD is shown and Upconvert if they ONLY show upconverted material. SciFi may only show 10 hours a week of HD, but if that material is all of their top rated shows, that is in my opinion, better than Smithsonian showing 100% true HD of the same 20 shows over and over again.
Different people have different opinions, and that is great. So opionions on if enough HD is on any given channel to be called a HD channel will vary person to person. In my opinion showing stations that do have some true HD as Upconvert only on the chart is misleading.