In the TV-series Lucifer, Lucifer used to have wings and they are later revealed to be of bright white colour. But his brother had blackish wings. Is it due to his skin colour or is there any significance to it? Is there any explanation of it in comics or is it based on some Catholic beliefs?
It's because of Amenadiel being black, Uriel and Lucifer's wings are white as his skin too.
As you can see they are white:
And Uriel are white too, with a bit of brown but it can be shadows illusion:
We don't have proofs until now, so it's a big probability of being by skin colour. Perhaps, I have another suggestion that's because of Amenadiel being a warrior and Uriel and Lucifer don't.
At the very beginning of season 5 (and even in the trailer of this 5 season), we learn that:
Lucifer has a twin brother who looks exactly like him and (likely) share the exact same DNA.
However, those two angels have very different wings colors even though they share the same skin color.
We also know from season 3 that:
Angels "self-actualize" and have control over there own wings and own power. Thus, they are the only one responsible if they:
- Lose their powers
- Get their powers back
- Lose their wings
- Get their wings back
Given that, I believe it is safe to assume that each angel actually choose the color of their wings and have control over it (so they could probably change the color of their own wings if they wanted to).
Since angels choose which color their wings are, it probably has a meaning but only for themself. So two angels with the same wings color could have two different meanings.
Maybe one has white wings because it goes well with their skin color and the other has white wings because it represents purity to them.