A blue CPU slot means it's military spec.
If you are correct, then it's definitely not original, as Milspec 2000 dates from... 16 JAN 1989.
(no, you can't google it, but you can check the release date).
http://everyspec.com/MIL-STD/MIL-STD-2000-2999/MIL-STD-2000_10934/On the other hand, having a hotter than normal CPU would require a connector capable of withstanding 125C without deforming... nylon or better rather than polyester or ABS.
If you can find some evidence to back up your claim Rob, would love to know how you know... bearing in mind that blue connectors are definitely NOT military spec now, so could be used currently to defectively repair old military equipment if you are correct. Only they would deform at 125C, so quite frankly I think you are not correct at all.
Misinformed rather than deliberately deceiving, there is an old saying about the military "Bull$hit baffles brains", ie the operators get taught a lot of things that just are not accurate.
So long as the equipment is accurate and goes BANG when you pull the trigger, it doesn't matter.