Those are the pistils. Once they all turn darker and crinkle in you can start checking the trichomes with a loop (30-60x is probably best).Some look orange, but mostly still white.
They'll start out clear (not ready yet), turn cloudy (max THC and and 'up' high) and then turn amber (more of a body stone and a 'couchlock' effect).
Once you get to cloudy it becomes grower's choice where on the scale you want to harvest to get the effect you're after. I like more amber, but plenty of growers prefer the more up version.
But, if mostly still white, you've still got some time yet.
Looks like you've got some monsters there.