The first is the material's original color, and the later two are the result of the wicker being steeped in the juice of willow branches and leaves for either five or nine hours.
編織完成的藤板，呈現米、棕、黑 3 種色澤，前者是藤條的原色，後二者則是在浸有柳枝、柳葉的沸水中分別「煮」5 小時及 9 小時後自然形成。