Having read the last post in this series, a reader kindly emailed me this image of a pair of Grendey chairs with (presumably, later) stuff over seats.
When freshly rushed, the squab was of a variegated – though not unpleasant – green colour (fig. 2).
With a combination of natural and artificial colouring, the seat has adopted an older, mellower look (fig. 3).
As the chair sees regular use, the thick rush fibres will compress and the squab will settle further into the seat rails.