Where is the cement?
Is it damaged, or just no longer attractive?
How is the concrete damaged? It may be that you will have to first repair or replace it before being able to paint or stain it successfully. Posting a picture of the concrete would help to illustrate what you are starting with.
Hi, M. Black!
Behr makes a concrete stain that comes in a wide variety of colors if you're interesting in tinting the concrete... It is available at Home Depot! I hope this helps!
You could stencil it!
Concrete stain is your best bet.
Simplecrefresh is to rent a power washer. It's amazing how much lighter it will come.
There is an acid that hardware staff will help you with, they use it on newly built brick walls to clean em up. Luck with that.
Pressuring washing with this solution works well. https://amzn.to/37eR0hw
Hope this Helps! Jeremy - https://do-daddy.com