I love it when a character, post-transformation, keeps their same colors (skin, eyes, hair), especially for human characters. I feel like there's not enough of that out there.

https://sfw.furaffinity.net/view/22400996/
https://sfw.furaffinity.net/view/22416882/
https://sfw.furaffinity.net/view/26821113/
https://sfw.furaffinity.net/view/26097835/

(One of the nice things about inanimate TF is that it's almost always like this.)