[Penforhire]

I usually put my own two cents into answering grammar questions here but I'm curious about an example I stumbled over. Does this have a regional basis, is the text incorrect, or am I incorrect?

Here is the sentence which has me scratching my head -- "A good example are labels, a type of meta-data you can use to assign a colour to a piece of your draft."

I noticed this in section 2.1 of the user manual of the Windows version of Scrivener. I am thinking "are" in that sentence refers to the singular word "example" and therefore should be "is."

I know the author is from the U.K., as if "colour" wasn't enough of a hint. Is there some U.K. usage that is different from how I understand this grammar?

TIA