Your pics are too blurry. The hairs look to be turning of an amber hue, but this is not a good refference for havest time unless you are familiar with the strain. Do as Sure Shot said, and get a microscope to view the tric's. I like to harvest when 75% of the tric's are cloudy/milky, and 25% are clear still, this makes for a nice cerebrial high which Im very fond of. You will want to harvest prior to the amber tric's "exploding" because this is when THC degrading occurs.