What color is Sidewall, Souvenir ?

Source Crayola® CSS3 CSS4
#575549
 
#414a4c
outer space
#556b2f
dark olive green
#556b2f
darkolivegreen
#cbc5b7
 
#cdc5c2
silver
#c0c0c0
silver
#c0c0c0
silver
#7e7868
 
#757575
sonic silver
#808080
grey
#808080
grey