London: City with the most tri-colored beards

The world of tri-colored beards is a diverse one. Some tri-coloring is more obvious while others are rather subtle.
But what about geographic trends, which city gets the most tri-colored beards per capita?
As it turns out, this crown of multi-colored glory goes to London, the capital of the United Kingdom. Who knew?

But let's get to the numbers, 22.7% of beards there, are made out of three or more obvious colors, that's 4.4% more than the next city on the list, Salzburg in Austria, which scores a 'mere' 18.3% percent total tri-colored beards.

(Source: PEF research)