Answer:
Of the king I am blue and of the peasant I am red. Of the frog I am cold and of the dog I am hot instead. What am I?
I go up when the rain comes down. What am I?
I am a protector. I sit on a bridge. One person can see right through me while others wonder what I hide.
I am a path between high natural masses; remove the first letter to get a path between man-made masses.
I wear a red robe with staff in hand and a stone in my throat.
No matter how little or how much you use me, you change me every month.