[bigger_cheese]

Yes Australian here. I run into this problem with programming languages all the time. Because of things like "colour" vs "color" or "centre" vs "center". "Maximise" "minimise" etc are good examples as well

My coworkers and I call it the 'American API' problem.

[duncan_bayne]

Places I've worked - in Australia and NZ - have adopted American spelling throughout the code in an effort to standardise with tools, APIs, etc.

That is, "Use American spelling wherever possible in the code" is part of the coding standard.