When examining the Monogatari series’ usage of color, no other arc exemplifies the franchise’s attention to detail quite like Owarimonogatari‘s Shinobu Mail.
Not only does this particular narrative arc showcase specific color patterns within the first episode, but it also gives Izuko Gaen ample screen time, further demonstrating what color can tell us alongside character dialogue and key plot points. Prepped to pay attention to the series’ use of color thanks to the first episode of Shinobu Mail, Gaen’s near-permanent rainbow-tinged sky speaks volumes.
As an aside, I don’t usually post spoiler warnings, but the final few paragraphs of this piece include major spoilers through Koyomimonogatari.