What color is Architectural panels from the Western Methodist Book Concern Building, Chicago, Illinois (Harry B. Wheelock, architect) Architectural Panel ?

Source Crayola® CSS3 CSS4
#b1a78f
 
#95918c
gray
#bc8f8f
rosy brown
#bc8f8f
rosybrown
#726c5f
 
#757575
sonic silver
#696969
dim grey
#696969
dimgrey
#272118
 
#000000
black
#000000
black
#000000
black
#8f8472
 
#9f8170
beaver
#808080
grey
#808080
grey
#4c4538
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey