What color is Bound Print, Cross Section of a Three-Story Building ?

Source Crayola® CSS3 CSS4
#cbc0b6
 
#cdc5c2
silver
#c0c0c0
silver
#c0c0c0
silver
#7f7e70
 
#757575
sonic silver
#808080
grey
#808080
grey
#9f988d
 
#95918c
gray
#bc8f8f
rosy brown
#bc8f8f
rosybrown
#b8917a
 
#cd9575
antique brass
#bc8f8f
rosy brown
#bc8f8f
rosybrown
#646156
 
#6e5160
eggplant
#696969
dim grey
#696969
dimgrey