These are barely different than the examples at https://iterm2.com/python-api/examples/
random-colors.py- Sets a random theme when a new session opens. Set as an auto-launch script in iTerm to get a random theme on every new window or panel.change-theme.py- Changes the theme of the current session to a different random one.what-color-scheme-is-this.py- Outputs the name of the current theme.