RaceMenu - Animated Overlays
www.nexusmods.com
Allows you to choose RaceMenu overlays to only show up when you're fighting, as well as offering a selection of particle effects to use in or out of combat.

I’ve recently bumped into this little mod here. It basically just adds a toggle that makes it so that specific RaceMeny overlays you pick fade out when not in combat and fade in when they are in combat.

Example

Makes for a rather rad effect, and I don’t think I’ve seen anyone talk about this mod anywhere so might as well share it.