Answer:
First you see me in the grass dressed in yellow gay; next I am in dainty white, then I fly away. What am I?
Against the sun I protect your eyes and am often worn on the face of spies
I am higher than the king
I am gentle enough to soothe your skin, light enough to fly in the sky, strong enough to crack rocks. What am I?
In many hall ways you would stand if not with me in hand.
It's what light turns into in the night