The Colour from Out of Space

My take on Lovecraft short story. This alien gasseous creature have a behaviour like a vampiric parasite, heavily mutating every organic life around and then sucking back all life(colour) from them

Background
Sky: [link] , [link] , [link] , clouds from Night Fate (link broken), [link]
Farm: [link] , [link]
Trees: [link] , [link] , [link] , [link] , [link]
Grass: [link] , [link]

Well: [link] , wood textures links are down