Because I would probably prefer B&W version on Mondays and color version on Tuesdays 
While some clouds just must be in B&W, like in Clouds in Black & White - #66 by jeffholdgate, I don’t think this is the case here. Color version is probably also good, just different.
On the other hand, some landscapes must be in color. I can still remember when I first visited France, landing in Nice at the golden hour. Yes, I learned in school about impressionism, but didn’t “understand” it until I saw the real colors. Think of van Gogh’s Arles paintings in B&W.