question: what color is the small cube that is not metallic or green?
#1 return cubes 
#2 return #1 that is  small 
#3 return #1 that is  metallic 
#4 return #2 besides  #3 
#5 return #4 that is  green 
#6 return #4 besides  #5 
#7 return color of #6