Phobos and Deimos

I was searching for a forest. A blue forest with black trees. I found that forest under a red sky. It rained and red raindrops fell into the ground. Two moons I saw, high above in that red heaven. The black trees died and the forest became deserted. Rivers started to flow, red rivers wounded the blue ground and, as I laid down to stare at my two moons, the gods started to fall down from their heavenly seats.

Frazetta's art

"As I stood thus meditating, I turned my gaze from the landscape to the heavens where the myriad stars formed a gorgeous and fitting canopy for the wonders of the earthly scene. My attention was quickly riveted by a large red star close to the distant horizon. As I gazed upon it I felt a spell of overpowering fascination--it was Mars, the god of war, and for me, the fighting man, it had always held the power of irresistible enchantment. "

In A princess of Mars - Edgar Rice Burroughs