What color is Hereford Community Building (unbuilt) ?

Source Crayola® CSS3 CSS4
#c1d0d0
 
#cdc5c2
silver
#d3d3d3
light gray
#d3d3d3
lightgrey
#6c7069
 
#757575
sonic silver
#696969
dim grey
#696969
dimgrey
#4c4f47
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey