Answer: I would say that it is the same color.
Explanation:
3 cups of white and 9 cups of green.
7 cups of white and 27 cups of green.
Imagine a green marker and a bunch of piece of paper. Make a green circle of a sheet of paper and put another on top. Repeat the process until there are 3 pieces of paper with 9 green circles and 7 seven pieces of paper with 27 green circles.