That seems… mostly correct? But in this case the shadows themselves are mostly harmless, the problem is when your team confused one to the point of exploding earlier. Any human within range would have been KO'd instantly, but your powered teammates were a little too tough to go down that easily. Exactly why, you're not entirely sure.
You recognize the symbol on the patch pretty quickly, it's most commonly used to mark samples of a chemical compound nicknamed, appropriately, Blue Sun. Rigel's intel says that it's capable of triggering a temporary Nova-like reaction in unpowered individuals, or enhancing powers that are already present.