What color is Ceiling Paper (USA) ?

Source Crayola® CSS3 CSS4
#41404e
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey
#918c82
 
#95918c
gray
#808080
grey
#808080
grey
#879cad
 
#979aaa
manatee
#778899
light slate grey
#778899
lightslategrey