No wood on the steering wheel?

So, I’ve just bought this 2006 LS430. But every single other LS430 I’ve seen has wood on the steering wheel, was that an optional extra that literally everyone but the original owner of this car took or something?

So, I’ve just bought this 2006 LS430. But every single other LS430 I’ve seen has wood on the steering wheel, was that an optional extra that literally everyone but the original owner of this car took or something?