Did you solve it? The puzzle of the red and green hats

The answer to today's headwear conundrum

Earlier today in this puzzle blog I set you the following puzzle:

A box contains two red hats and three green hats. Azalea, Barnaby and Caleb close their eyes, take a hat from the box and put it on. When they open their eyes they can see each other's hats but not their own. They do not know which hats are left in the box.