Depends on the team and company. If it is a US company or predominately US team then I'd say American English. If instead it is a British based company, or pre

Depends on the team and company. If it is a US company or predominately US team then I'd say American English. If instead it is a British based company, or predominately a British team then I'd say British standards. As an American I would have no issues with using British spellings of words if that was the decided path. In the end, I think consistency in the code base is most important and a note on the repository which says which it follows. It only becomes a problem if people use both interchangeably or inconsistently, that makes it a pain in the ass.