What color is Drawing, Design for an Apparatus for Boiling Water ?

Source Crayola® CSS3 CSS4
#b9b39d
 
#b0b7c6
cadet blue
#a9a9a9
dark gray
#a9a9a9
darkgrey
#837d6a
 
#8a795d
shadow
#808080
grey
#808080
grey
#31302c
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey
#565145
 
#414a4c
outer space
#556b2f
dark olive green
#556b2f
darkolivegreen