https://chezmoi.io is a dotfile manager that is runs on multiple OSes (including Windows) while handling differences from machine to machine, allows you to store your secrets in your password manager (so you don't have to store secrets in your dotfile repo), and it even supports the NO_COLOR environment variable. Check it out! Disclaimer: I'm the author.
There's a comprehensive list of the most popular dotfile managers at https://dotfiles.github.io/utilities/.