He's just all shiny pretty from his from his fresh shed

Snakes have cells in their scales called iridophores that cause that kind of pretty iridescence; located in the cell layers beneath the main pigmenting cells (melanophores, xanthophores, erythrophores, etc) these cells have specialized, pigmented organelles stacked inside of them that reflect blue light, which is why the shininess tends to appear bluish. Brazilian Rainbow Boas have a larger concentration of iridophores in their scales than most reptiles, with this increased iridescence giving them their name as "rainbow" boas.

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He's just all shiny pretty from his from his fresh shed

Snakes have cells in their scales called iridophores that cause that kind of pretty iridescence; located in the cell layers beneath the main pigmenting cells (melanophores, xanthophores, erythrophores, etc) these cells have specialized, pigmented organelles stacked inside of them that reflect blue light, which is why the shininess tends to appear bluish. Brazilian Rainbow Boas have a larger concentration of iridophores in their scales than most reptiles, with this increased iridescence giving them their name as "rainbow" boas.