Literally either just adding a new pair of wings using glass panes.

Maybe making the black light wings invisible instead (which would be funny since black light in real life isn't visible when immersed in other wavelengths of light).

This would be great for those with capes!
Curios has an option to "Toggle Visibility" on slots, perhaps making that work with wings would be a good place to start with this?

This would be great for those with capes! Curios has an option to "Toggle Visibility" on slots, perhaps making that work with wings would be a good place to start with this?

That certainly sounds good, too.