What color is Sidewall And Border (possibly USA) ?

Source Crayola® CSS3 CSS4
#7c7b73
 
#757575
sonic silver
#808080
grey
#808080
grey
#d9d8c4
 
#dbd7d2
timberwolf
#d3d3d3
light gray
#d3d3d3
lightgrey
#414245
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey