I thought this was a great tip from A Sign of the Times
A quick trick for making over plain concrete blocks or pavers is SPRAY PAINT! Who knew! I was going to get concrete stain, which is pretty expensive and takes quite a bit of time, but I needed to get it done in a hurry. Sooooo, I tried using spray paint. It worked GREAT and looks good even close up.
SPRAY PAINT WITH
A LIGHT COAT:
Be sure you use light coats. It creates a “stained” look rather than a painted finish.