Also on these boards
The blue-to-green "transition" is more clearly visible in this illustration of a pre-Disney version of the story. As a story, The Little Mermaid predates Ariel by over 150 years, appearing originally as a Danish fairy tale; tales of mermaids can be traced all the way to Ancient Mesopotamia.
Mermaid Mommy and Baby. I'm doing spare room/future nursery in these colors right now. If I ever have a girl...I will need this!