Live wallpaper colour was changing to grey
Yes, that's normal. It's a live wallpaper that changes with the time of the day if i'm not mistaken
Live wallpapers are designed to change colour with the weather:
OXYGENOS LIVE WALLPAPER
Live Wallpapers are exactly that. They’re animated, but in this case, they specifically change hues according to real-time weather conditions instead of random colour changes.
[Today, May 17] Apex Legends Mobile Goes Global
by Bhaveee, 2022-05-17