The blue you see is all natural in the rock,it is everywhere. There is no trick photography or lens filters used, the photo was taken with a HTC cell phone / camera.
golden royboy was asking about the third picture with the blue in the upper right corner, that is the sky, and those green things are plants. I tried to fit everything into the photo but I am too close, with no room to back up without falling off of the mountain side, this spot is way off the beaten path up the side of a very steep mountain side.
db