Brown eyes on red silkie. Normal?

[Rock17]

This is hera. My other silkies have very very very dark brown eyes. Hers remind me of some kind of Orpington X silkie. Is she a cross or just special?

 

[Debbie292d]

While most silkies have black eyes, many are dark-browned eyes. I can't even see my silkies eyes until I'm trimming them, and mine do have black eyes though.