I'll have twin lions as well, you can decide the gender. But if they could some white in them? They could be all white or markings it doesn't matter just markings. I'd like one to look big and protective, while the other is sort of weak and dependent on the other.
I'd like my twins to have kinda red-brown fur and I think having light hair tufts would be cool. Any markings are cool, too, probably in a darker colour. I'd like one of them to look lazy/uninterested and the other to look annoyed with the lazy one. I'd also like them to be non identical, but very similar in looks.