I am very rusty on my Cockatiel mutations, especially the newer ones. The Pastel Face was only just coming around when I stopped breeding them.
That is the colour that the Lutino should look like, but with bright orange cheek patches, but after they first bred the lutino they were trying to get a pure white bird so they bred the palest lutino's together. All they succeeded in doing was diluting the yellow and didn't achieve the lovely white bird until the Whiteface mutation came along.
I know some breeders here have been trying to breed the lutino back to that lovely buttercup yellow colour. The bird above does not appear to be a lutino as the eyes appear to be normal in colour and not plum coloured. But if it was a lutino it would be a Pastel Face Lutino Pearl as I can see some pearl markings on the bird. On a lutino bird the pearl makings are a deeper yellow that the rest of the body.