What color is Photograph, Photograph of the Construction of a Mass-operational House Designed by Hector Guimard (No. 37) ?

Source Crayola® CSS3 CSS4
#9a9690
 
#95918c
gray
#bc8f8f
rosy brown
#bc8f8f
rosybrown
#7a7262
 
#8a795d
shadow
#696969
dim grey
#696969
dimgrey
#49443f
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey
#cec9c0
 
#cdc5c2
silver
#c0c0c0
silver
#c0c0c0
silver