osu/osu.Game/Configuration/SeasonalBackgroundMode.cs

// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
// See the LICENCE file in the repository root for full licence text.

namespace osu.Game.Configuration
{
    public enum SeasonalBackgroundMode
    {
        Always,
        Sometimes,
        Never
    }
}