What color is Sidewall (possibly USA) ?

Source Crayola® CSS3 CSS4
#b5ac97
 
#979aaa
manatee
#a9a9a9
dark gray
#a9a9a9
darkgrey
#4e4435
 
#414a4c
outer space
#556b2f
dark olive green
#556b2f
darkolivegreen