Not sure what you have looked at, but Crane - makes a dark grey called greystone. The nice part about their color is it's a true grey - others sometimes appear to have a a taupe undertone.
Can Anyone Help Me Find A Really Really Dark Grey Vinyl Siding? Color And Name Brand Would Be Great.
The darkest grey I can find is sold by KP it's called Norman Rockwell and the color is called Graphite. Be prepared.....it's expensive. Website is