Given 2.5 billion people live in the commonwealth, which is presided over by Her Majesty Queen Elizabeth II, and about another half a billion live in other monarchies, you may be surprised
"I think you'll find it was orange, Lord Melchett,"
"Grey is more USUAL, ma'am,"
"Well, Majesty, there were these magnificent orange elephants..."
"In fact, her skin had been scarred by smallpox in 1562, leaving her half bald and dependent on wigs and cosmetics"
A better candidate answer to the question would be France - a title claimed by all monarchs of England/the UK until the early 19th century.