Hey Darren. If you mean a seedling, then they are very unstable. I have a seedling Seville sour orange that Joe sent me the seeds from. I produces some variegated leaves & then it will produce a flush of green leaves.
If you want a stable variegated citrus you need to get budwood from a good quality bud sport with nice variegation. I have variegated Seville & Bergamot sour orange that JoeReal sent me budwood of. These have excellent variegation of all the leaves.
If you want stop by today, I'll be here all day. Also on vacation for the next week as well...