The outer shell usually turns brown as an indication of ripeness.
16+ Brown Spots In Avocado Flesh. What are the brown spots on avocados? You'd have to leave it out for a few days.
When Is An Avocado Bad 5 Ways To Tell from i0.wp.com
Rub the flesh of the avocado with either lime or lemon. What are the brown spots on avocados? Or maybe you've been meaning to try wash the green flesh off the skins/stones so the dye is as bright as possible.
But the brown color is not a sign that it's spoiling.
Avocado turns brown just like apples do when exposed to the air. You can use by itself, or with some honey. You'd have to leave it out for a few days. The avocado is edible, but may not taste as good.