Not easy to see anything with your photos, sorry. But I think you're almost good for harvest.
Trichomes turn amber when the THC inside degraded into CBN. But, if you want to save a few days, you can achieve that after harvest with heat and UV.
That's not foxtailing Roberts. It's more like a slight excess of nitrogen that pushes the plant to continue flowering.
Foxtail is a genetic issue when the calyxes grow one on top of the other, instead of forming buds.