The trichs still look pretty clear in these most recent shots. When to harvest depends on what kind of high your looking to get from them. More clear to slightly milky colored trichs will give you more of a heady high, while more cloudy to amber trichs will produce a narcotic, couch lock type high. I like to wait until about 15% of the trichs have turned amber, but will harvest a little earlier if the plant is taking forever to mature. (11th week on up...)