Why are the trichomes not turning amber on auto


It was the led lighting. If you look at the upper most node you will see the sac. The PH is perfect with the runoff, they only get R/O water and the timing for the nutes is perfect. The humidity is 45%, day temp 73, night temp 69. Picture under normal lighting is attached. I am not worried about any deficiency or imperfect PH. I am worried that they are going to produce seeds. The auto’s are fine because they will be cut in a few days and the sacs are still immature to produce pollen on the non autos. So I just need a second opinion on whether or not to cut them and get on with the next. Thanks