What color is Drawing, Study for "Merchants Prefer Shell" ?

Source Crayola® CSS3 CSS4
#dddbcb
 
#dbd7d2
timberwolf
#d3d3d3
light gray
#d3d3d3
lightgrey
#b2ae9c
 
#979aaa
manatee
#a9a9a9
dark gray
#a9a9a9
darkgrey
#8b8678
 
#9f8170
beaver
#808080
grey
#808080
grey