What color is Border (Belgium) ?

Source Crayola® CSS3 CSS4
#b5b0aa
 
#b0b7c6
cadet blue
#a9a9a9
dark gray
#a9a9a9
darkgrey
#77736e
 
#757575
sonic silver
#696969
dim grey
#696969
dimgrey
#938f89
 
#95918c
gray
#808080
grey
#808080
grey
#56534e
 
#414a4c
outer space
#556b2f
dark olive green
#556b2f
darkolivegreen
#322e2b
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey