As previous mentioned, the ombre polo (a color gradient where one shade fades into the next) is trending on tour, although I'm not sure why or how this became a thing. Matsuyama is generally a well-dressed dude, but it looked like he borrowed this outfit from a Marvel Comic villain. If you were looking for a tour trend to work into your own game, I'd let the ombre, well, fade, and wait on to the next one.
Oakley