Another hair issue I've seen is that the database does not take into account characters with two or more hair colors.
For example, Rose from Fullmetal Alchemist has black hair in the back, but the front is pink. I think a "multiple colors" option would be desirable here.

Sites:
Secret Agent Fangirl Manga - https://safg.deviantart.com
Other art: quamp.deviantart.com

have been thinking the hair color intensity trait might be more useful if used as "number of hair colors".

私は日本語を少し読むと書くをできます。あなたも？

quamp Another hair issue I've seen is that the database does not take into account characters with two or more hair colors. For example, Rose from Fullmetal Alchemist has black hair in the back, but the front is pink. I think a "multiple colors" option would be desirable here.

Luckily there is a tag for multicolored hair.

ah! you're right EatsSweets. tags might be better in this case

私は日本語を少し読むと書くをできます。あなたも？