When we were painting in Carmel we had about 4 days of cloud cover which made for fairly homogeneous scenes, the middle of the day looked like the beginning of the day looked like the end of the day. So I thought, “Maybe I’ll turn this scene into a nocturne.” I’ve done it before, you just use the values at hand and adjust the colors, on a gray day it’s not so hard, you are halfway there already. What little top light there was I translated into moonlight, imagining it to be cool against the warmer rocks. The water was sort of a best guess based on what I remember moonlit water to look like, kind of green gray moving down to darker violet brown waters at the bottom. The reflection in the water was made up too. I did a florida night scene once and went out to the lake to study the colors and values of sky and water and made little sketches of how moonlight bounces off fairly still waters.
By the way, I got the website updated with new stuff… www.larrymoorestudios.com