You probably need anti slip paint of some kind if you walk on them when it's wet. I doubt you can just use any old exterior paintHas anyone painted concrete slabs? The colours on ours are naff…is it durable/does it look good?
There is a driveway near me which has been painted.i was tempted to do it as a some what temp solution, but i haven't yet. i think the issue is that in particular it's hard to get a fully coated finish, but when you do, it looks too solid of a colour, and then, paint can and does eventually peel come off in places.
there must be a reason i've never seen a painted block driveway in the wild.