Change icon color of the div after the first one is selected

Change icon color of the div after the first one is selected

what I have: the div will change the color after click.

what I want to do: the first click will change the background ( I did ) , but the second click will change just the icon color of other div.

so if I click in any div

first will change the background color ( I did )

second if I click in any other one will change the icon color.

as well I would like after the second click, show me a alert saying 'you can just select 2 div at the time'

I am very brand new in js and jquery and that was the max I could do.


right now:
the icon  who suppose change color is the one was clicked, right now is changing in all. the background color supose not change just the icon color of the clicked icon, As well I would like a message after the second click saying the person can't click anymore blocking the clicks till they deselect the divs selected. thank you for your help.