Really nice game, looks really polished and professional. The whole backstory with the voice acting, the gameplay, the cute characters. Also, being able to control your chameleon while the story is being told is a nice touch. All in all, really professional and well-made!
I do have a few suggestions. I know it's the nature of the game and of UCD, but the random color changes feel really unfair, it makes the game almost purely luck-based. Especially when hiding in a bush and your color shifts when there's a predator near, you can't really do anything to avoid getting pecked. It's a bit of a weird thing to change, because why would a disease suddenly stop while hiding in a bush, but still ... perhaps the option to dash (with a cooldown) could help?
And, please make the score counting skippable, it's pretty annoying to have to wait for it when you're eager to play another round.