I feel like microscale and scaleless head are one of those lesser/butter or phantom/mystic situations where it's the same genes with slight polymorphism. Until they start getting crossed out and watered down...

definitely one of the 'scale' genes. And I would say pastel, not super pastel.
I don't believe scaleless head or microscale would affect the eye color like pastel does, but it does sometimes also make funky patterns or really brighten up other morphs.