The outer covering of seeds is usually the same as the pod parent genetically. That means all seeds produced by Sharon's Delight should be the 'white/beige' colour no matter which cultivar is the pollen parent. Sharon's Delight was hybridized by Norris. You might try asking Richard Norris (email address on this web page
http://www.ashwooddaylilies.co...) if he has used Sharon's Delight as a pod parent and whether it produces white mature seeds.