Why is my cockatiel gray around the face?

he is a Lutino. The feathers around his beak seem a weird greenish gray color and I’m really worried about him. He is otherwise extremely happy and playing and singing, but I really don’t know what this is and I tried googling it and absolutely nothing came up
Answers

Steven S

If you look them up, you will see many of them have this.

Anonymous

I would just watch him closely. If he’s acting happy my guess is he’s okay? Check with your vet if you’re really concerned - I once freaked out that my bird had orange on his face, thought he was bleeding. Then realized he was rubbing his face on his toys!

Anonymous

What did the Veterinarian say? You can't be too concerned if you haven't asked one.