Beautiful, subtle colour palette. Did you do much in post, or was this more or less how the camera ‘saw’ it? The reason for asking is that most times when I shoot dramatic skies, I leave the 6D’s colour settings on auto. The results I get when running the files through Canon’s DPP raw converter often need very little, if anything, doing to give (to my eye) a very pleasing image. Seems like cheating a bit, sort of like “this is how Canon saw my sunset” or whatever. Still, as they say, if it ain’t broke…..