If you use the iOS app with iPad, in Settings you see « Customize color scale » but this feature is blocked.
In fact if you want to modify colors of the iOS app, you must do it on desktop via the website.
Or .... you can do it directly on iPad but you need to use the mobile website windy.com, not the iOS app.
I just tapped on your Windy.com link and it brought me to a new map. Now I’m REALLY confused. Is this what I used before without knowing it? I’m getting a migraine headache 🤕