Blue hour

The final chapter sits outside the calendar. Rose retreats into blue, while lavender and ivory circles remain suspended across the surface. Their repeated round shapes give memory a rhythm: one light appears sharply, another returns as a faint echo.

The Purkinje shift lends this chapter its reference: as illumination decreases, the balance of visual sensitivity changes towards shorter wavelengths. In this imagined inner season, twilight becomes a meeting place for the other four chapters. Their colours remain as memory, available to be seen again.