I remember that, unfortunately.
The best colorization I've ever seen was Disney's colorization of the first season of Zorro, which they'd done in the late 90s or thereabouts for a run on The Disney Channel. I also have a French DVD release of that colorized Season 1. While I'm normally very...
https://www.kinolorber.com/product/a-star-is-born-blu-ray
You might want to consider getting the Selznick boxed set:
https://www.kinolorber.com/product/the-david-o-selznick-collection-blu-ray-box-blu-ray
I think the rooster was typical of Pathé releases. Even the current (French) Pathé logo uses a rooster image.
https://en.wikipedia.org/wiki/Path%C3%A9#/media/File:Pathe_logo.svg
But, yes, the rooster standing on the globe is a stitch.
I'm curious about how that happened to be. I know that this film has been in the Public Domain, but that doesn't explain why the OCN was available to Warner (and wasn't to Kino, who released it back in 2012). It's not like the film was originally distributed by them and they happened to have the...