Looking to match cell color along with cell values

Is there any way to format a cell's color to be the same as another cell that has a matching value? I can't see how it could be done with CF (which I'd rather stay away from anyway), so I'm wondering if anyone knows how this could be done - I've manually done this for cells C5:C7 on the Grid worksheet attached, for values that match C18:C25, but it would be nice to do it automatically, otherwise probably not worth the time... Any suggestions greatly appreciated!