More options for the sky:
-toggle-able clouds that would move slowly (maybe be able to change colors)
-effects like lightning, rain, etc.
-Choices between different color or shaped suns and moons
-toggle-able stars
-Maybe even smaller effects like birds in the distance or silhouettes on the horizon line
-and of course ability to change to different sky colors at certain points in the level.
#Sky Options
blissful bone
turbid hound
I like
vapid reef
Some are technically possibly with animations but overall I like it