@dowencarson brownish red pistils are the clue to look at the trichomes. How developed the trichomes get is up to you. I go for max cloudy and then I cut them down. Sometimes I get amber trichomes and sometimes I don’t get a lot. Every plant and grow is different.
Try not to harvest too soon. Much of the bud building occurs in the final weeks before harvest. Timing is crucial.
When the pistils are browning it is time to look at the trichomes with a jewelers loupe or magnifier
Here is what to look for
Clear Trichomes are still growing
Milky trichomes are mature
Amber trichomes are past maturity
You need a jewelers loupe or a 30x magnifier minimum. I use a 100x scope!