"Cement" colored paint

[ezdays]

I've always have mixed my own and it's a bit different each time. New cement is usually a very light gray, but to age it I add a bit of yellow to it and sometimes a touch of green and/or black to make it a bit darker as well. Cement is not consistently the same color, I've got a couple of patches in the sidewalk and a walkway around my house which were done within a few weeks after the initial pour and they stand out, one is lighter than the original, the other is darker.