>>3485225>>3485222I wasn't the one posting that comparisson. This topic has puzzled me for a while. From my experience, skies really aren't consistent from place to place. In one location, yes the colours stay pretty much the same across the seasons, but even going small distances along longitudes, brings changes.
And I certainly have seen yellow clouds. It's the reds that are uncommon to me, but they still can appear. Top right clearly appears natural to me compared to the left one, but I'd never be able to claim it is what op saw, since I wasn't present.