# data[].attributes.body
Blue stands for tranquility or loneliness.
Page 41: " In his blue gardens men and girls came and went..."

# data[].attributes.body
White stands for purity and cleanliness.
Page 8: "They were both in white, and their dresses were rippling and fluttering..."

# data[].attributes.body
Gray means poverty.
Page 23: "But above the gray land and spasms of bleak dust which drift endlessly over it..."

# data[].attributes.body
Green means hope or future. It isn't necessarily good.The green light led to the future even though its not so good.
page 21: "nothing except a single green light, minute and far away, that might have been the end of a dock."

# data[].attributes.body
Yellow means fake or not true or real.
Page 123: "' It's a nice yellow one,' said Wilson as he strained at the handle"