What color is Drawing, Study of palm trees ?

Source Crayola® CSS3 CSS4
#c2c7b1
 
#cdc5c2
silver
#c0c0c0
silver
#c0c0c0
silver
#b6a987
 
#bab86c
olive green
#bc8f8f
rosy brown
#bc8f8f
rosybrown
#7b774d
 
#85754e
gold fusion
#696969
dim grey
#696969
dimgrey
#59533f
 
#414a4c
outer space
#556b2f
dark olive green
#556b2f
darkolivegreen
#998769
 
#9f8170
beaver
#808080
grey
#808080
grey