It's true! In one of the recent demos, a Strogger could be seen with blue armor in its HUD. How so? Well, I revisited it, and found out that right before Tab followed a Strogg player (spec. Pho), he was following a Doomer with - you guessed it - blue armor. My speculation is that Pho was wearing red armor at the time (the armor pickup behavior confirms this), but the game didn't redraw the HUD icon, resulting in this little quirk.

It's probably been spotted by now, but I just noticed this and wanted to get this out here.