meanings of colors:

Green : Peace, safety, relaxation, freshness, growth, healing, money, environment.

White: Freshness, hope, goodness, light, purity, cleanliness, simplicity, coolness

Yellow: Joy, cheerfulness, friendliness, intellect, energy, warmth, caution, cowardice.

I think they mean you are peaceful, cool, joyful, cheerful, friendly and good!