Is there a way to do this without “filling” the icon?
I want to do the exact same thing and have tried uploading a white version of my existing icons and adding your snippet so that they turn black upon hover.
They turn black upon hover which is great, but the icons in their normal state are just white blobs!
Anyway suggestions to sort this?
Didn’t want to start a new thread as this one is precisely the same issue I was having…