What color is Dome-shaped Architectural Staircase Model ?

Source Crayola® CSS3 CSS4
#382421
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey
#c6c1b7
 
#cdc5c2
silver
#c0c0c0
silver
#c0c0c0
silver
#654e3c
 
#714b23
raw umber
#556b2f
dark olive green
#556b2f
darkolivegreen
#58301b
 
#714b23
raw umber
#8b4513
saddle brown
#8b4513
saddlebrown
#7e6d5a
 
#85754e
gold fusion
#696969
dim grey
#696969
dimgrey