Speaking of Japanese trains! I was farming Fate/Grand Order quartz yesterday, like a gentleman, and came across this Shinjuku train station setting:

Screenshot from the game, showing a train indicator sign.

The circled red M would be the Tōkyō Metro Marunouchi Line. Maybe the green square could be the JR Yamanote Loop Line, and the blue bar could be the Chūō Main Line. The others I’m not sure about; there isn’t a purple JR line serving that station, or a circled T line on the Tōkyō Metro or Toei Subway.