How to delete an item from a dictionary in Python

Code from video:
*****************
employees= {1: 'michael', 2: 'eric', 3: 'michael'}
del employees[2]
employees

Connect with us!
*****************

[jag]

That's how you delete a Key from a dictionary. But how can you delete an item from it? For example, I have {cars:[black, gray]}, but just want to remove 1 item (i.e audi)