No color changes to report today.
Today's sidekick is Terk (short for Terkina), Tarzan's gorilla friend in Tarzan. Originally male, the character was changed to a tomboy female after Rosie O'Donnell auditioned. According to IMDB trivia, producer Bonnie Arnold said, "You don't have to be a guy to be a best friend." (Though honestly, there don't seem to be that many female Disney sidekicks.)
Unusually, O'Donnell provided the voice for both young Terk and adult Terk (apparently they couldn't find a girl who could match O'Donnell's sass).