[{HVY-E}Jinxx]

Basically you are ALL correct about the color, to some point. The way those work is very simple (we use them still in the Army).

They start out almost clear and as they absorb moisture, they get darker. This lets you know that whatever the Pack is protecting needs to be changed out as it's received/is holding too much moisture.

Typically we use them for MLRS Rockets/Missles and other weapons/systems (Missles, Rockets, Radio, Night Vision etc), that need to stay cool/dry during storage/transport.

The color that is currently used would signify a windscreen in DESPERATE need of replacement as the view from the inside to the outside is most likely VERY cloudy. Most likely to the point of trying to see thru milk.