Sorry for the late response, but I’ve got this all fixed up now! ✨ I added a brand-new plugin (free of charge) called Xy_IndoorNoDayNight. Just place it under your Xy_DayNightCycle plugin, adjust the parameters however you’d like, and add the note tag to any “indoor” maps you want it applied to. 💕
You can also customize the indoor tint/light — so if you want it naturally darker to add your own ambient lighting (or for any other reason), you’ll have full control over that too :3 💫