Princess Fiona’s dad just looks like an older ‘white’ man, grey hair, male pattern baldness.
I’m not sure how reliable the pictures I’m seeing online, though, as King Harold and Queen Lilian both have white skin but the pictures online show Princess Fiona (sometimes) with green skin. She certainly did in the production I worked on backstage last year.
If anyone is spared green makeup I’d think they should be very pleased.