I thought about doing so, yes. But I also thought about making them look slightly different, maybe a bit more "dangerous-looking", more "fierce", if I can manage to do so.

I think what I can do is to at first look at how these angel wings look like in Black, and then decide if that colour does require a different optics/shape, too :)

Can't give you any estimated time though, only that I did and still do plan for other colours eventually.

Ah I see, my resource packs are so far only for Java Minecraft.

Do you mean 1.16.5? If you're on Java Minecraft, just select a resourcepack, even if it looks up "Red" (incompatible) for your MC version, and then look ingame if it works :)

I planned to make a black version, but soft pink might be an interesting idea, I guess there are a couple of players out there favouring pink :) No promises as for the release date though, I'm a bit busy.
If I release a pink version, I'll probably make a new post, so people can have separate versions.