In a message dated 3/24/2014 1:57:33 P.M. Eastern Daylight Time,
stuartmacm@GMAIL.COM writes:

I just  installed a new slider latch handle, and it makes the other door
handles  look like crap.  This handle looks to simply be painted with  satin
black paint, but the originals appear to have a more integral coating  than
paint.

What have folks done in this regard?  I  wonder if powder coating would
work.

i used krylon satin black .    removed them all, cleaned  them with mineral
spirits, let them dry and laid them out on a piece of  cardboard and
sprayed them with the rattle can.  looks great years later..  easy and cheap too.
.