The “colour library”, adjacent to the furnace, bears witness to the Orsoni family’s passion for mosaic art and the many years of meticulous formulas of association between light and colour; it contains countless tones and nuances which stretch beyond imagination. Absolute, sunny yellows, crystalline or deep and mellow greens, bright reds or pastel pink, a lively succession of shades of coloured glass bars which rest on ancient shelves, steeped in past mystery, to be admired. A journey through imagination.