You want me to pick one out of google? They all say the same thing https://www.linkedin.com/pulse/paradox-red-green-festive-per... https://www.bbc.com/news/av/business-33464903

Here's a link full of its own links https://graphicdesign.stackexchange.com/questions/6982/excep...

Or we can look at how old the western association with red as negative money is: https://grammarist.com/idiom/in-the-red-and-in-the-black/

If you wanted specific links you should have said so 4 days ago after I wrote "You can also do a text search for china red green stocks, or japan red green stocks."

If you want a citation for HN's orange not being deeply cultural, then you got me, I didn't actually check. But let's see... "The orange logo was chosen because it was the opposite of VC websites which were typically forest green or navy blue" yeah that's not deep culture.