Hi, also in picture 3 they look milky, but it could also be due to the lighting. In picture 4, I think I can see some amber colors on the edge as well. But like I said, it's not very clear. If you're going by the hairs, then yes, another sign that it's ripe is that the leaves are wilting. To be completely sure, try taking a photo of the trichomes again with your phone and under different lighting conditions, and if they really are milky, then harvest them.