I've seen them half clear and half cloudy, amber to the point of rupture and anywhere in between. Harvest is a question of how you want your bud to effect you. I usually take the top half of my plant at the earliest signs of mostly cloudy with some amber and some clear. Then I let the remaining buds develop to about 40% amber. I do leave some tops as well. I just enjoy that early harvested, very heady weed.