What color is Button with Painted Lady and Dog Button, late 18th century ?

Source Crayola® CSS3 CSS4
#736f6a
 
#757575
sonic silver
#696969
dim grey
#696969
dimgrey
#d0cec0
 
#cdc5c2
silver
#d3d3d3
light gray
#d3d3d3
lightgrey
#4f3f2f
 
#414a4c
outer space
#556b2f
dark olive green
#556b2f
darkolivegreen
#978574
 
#9f8170
beaver
#808080
grey
#808080
grey