You're welcome & sure, if screenshots or youtube-videos being available, I could at least mention my opinion of its graphics and gameplay anyway, even not "playing" or manually selecting my path's preference in-game. So adding screenshots sound useful for those who's plan to view or favorite it on e.g. a phone and possibly saving it for download or webgame-version, if available.

Stars or Clouds sounds cool, maybe the first one could also slightly glow or bit of blink if it's a nightsky. Or in case or daytime: a sun would be cool, probably clouds' shape sound harder to animate which fits to the rest of the graphics? Also a moon could be used in both cases, maybe also a hint to red/blue-moon scenario in reallife or maybe just a white circle which could update from "full" to "croissant"-shape xD

Fog could be an alternate way of filling transparent air, even not the sky itself. Or if fire being planned in-game: smoke that fase away to the skies' top as black sparkles, could sound cool? Hopefully my thoughts don't sound too detailled or hard to design, those are just the ones that visually could be unique than just a sky, not sure if it even fades from e.g. morning to night, etc. too?