Feminized pollen

Hey gents and ladies. Been doing research on this and had a few questions. I've got a plant that I started spraying 1 week before flower and been spraying into flower. Think it's week 3, and wasn't seeing much of a change (maybe the kind I was using was too low in silver, 30ppm) so I bought a stronger type that says 240ppm, and have been spraying the plant with it for 4 days now. I'm starting to see pistils look like they are turning darker, definitely not time for pistils to be dying yet. Does this mean feminized pollen sacs are on there way?

Any help would be much appreciated, not sure what to look for as I don't really see pollen sacs yet.

nope, not necessarily... I had a male plant I thru out so it would pollinate my female, then a couple days later pistols started turning amber and RED!! shes flowering wonderful and spotty red hairs here n there... I wouldn't worry too much about it, just keep an eye on it