The color of an avocado can tell you a lot about its ripeness. When avocados are unripe, they are green and hard. As they ripen, they turn darker green and become softer. Once they are ripe, they are dark green or even black. Unripe avocados are green. They are firm and have a slightly grassy flavor. Avocados that are starting to ripen are dark green. They are soft enough to be cut with a knife, but they still have a slightly grassy flavor. A detailed color custom cursor with Green Avocado on Green Background.