Seasonal combinations: owner-transcribed Season and Form seasonal palettes.xlsx, Palettes sheet. 72 combinations, six per month. Names preserved as entered; spelling aliases recorded in scripts/import-seasonal.py.
Digital colors: bundled Wada color dataset and workbook Color reference sheet. Additional digital approximations: https://wada.ink/colors/ (individual color pages for sea-foam-yellow, pale-turtle-green, grape-green, dark-perilla-purple, dull-purplish-black, violet-ultramarine, pale-cinnamon-pink, pale-ecru-drab, pale-purplish-vinaceous). Dull Citrine uses the previously confirmed #96874D reference.
User-confirmed variants: Eugenia Red A in 018/024, B in 010/047. Grayish Lavender explicitly B where marked B, otherwise A. Pale King's Blue A in 046/069, B in 031/032/063/071. Pale Methy Blue preserves the owner's book spelling and confirmed CMYK C65 M12 Y30 K0, digital #54AFB4.
Digital approximations are not color-managed print specifications. Month labels reflect the supplied book transcription, not automatic local climate or hemisphere seasons.