Pistil colours do _not_ attribute to maturity and cannot be used as a marker to check maturity level.
James:
We need to get info on how the trichomes look (you need a microscope for that, 30x + (pref 60x +).
You plants look quite nice but it's hard to say with the fuzzy picture.
Can you take a focused picture of 1 bud site if possible?
To see if the pistils are receding and wether the calyxes are swollen