Life in Christian County, Kentucky... The Rural Life...
The farm buildings at the other end of this green field have been built over the last year or so by a Mennonite family. It's certainly a very attractive setting. I don't know if older farm buildings were already at this site or not.
There's a practical reason for the white-capped fenceposts, you know. The paint seaks the top of the fencepost so it sheds water and lasts longer in Kentucky's rainy climate. It also adds a nice bit of definition and old-fashioned style to the long driveway. I don't know if there's any particular reason to use white paint or not, but I don't think I've ever seen any other color used.
I suppose that the fast way to paint the posts before you make the fence is to dip them in a bucket of paint. After the posts are set in the ground, maintenance of the paint would have to be with a brush.