What color is Mat, Ad Infinitum ?

Source Crayola® CSS3 CSS4
#4d4e49
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey
#c9cab3
 
#cdc5c2
silver
#c0c0c0
silver
#c0c0c0
silver
#a36551
 
#a5694f
sepia
#a0522d
sienna
#a0522d
sienna
#6f6e65
 
#757575
sonic silver
#696969
dim grey
#696969
dimgrey