I had to dig into this, because I also felt Python is green.

The Python logo has been blue/yellow in the modern era and monochromatic prior, but the Python IDLE icon DID used to be green[1]. Which in practice probably cemented into my brain very early on, since I learned Python with IDLE!

[1]: https://github.com/certik/python-2.7/blob/master/Lib/idlelib...

Python 2 docs used to be greenish https://docs.python.org/2.7/tutorial/modules.html#intra-pack...

I meant it more "if anyone's green, then it's Python, not Ruby". I still associate Python with green because of the typical cartoon color of snakes + Django