Colour perception is indeed fascinating. My son is autistic, and his attachment of labels to colours is idiosyncratic - e.g. one of his favourite things is an A

Colour perception is indeed fascinating. My son is autistic, and his attachment of labels to colours is idiosyncratic - e.g. one of his favourite things is an Angry Birds pig plush, which he insists is "yellow". This makes complete sense to me once we mentally translate to a different classification scheme - I believe he is seeing the (classical) Greek "khloros", the vibrant colour of growing vegetation, for which we don't have a precise word in English.