See: AKIKO TAKEHARA (1984) ‘The "Philosopher of Color", Clino Castelli ‘in Car Styling. Autumn 1984. Tokyo: Hokuto Tsusho. This is an article in Japanese, with captions to the colour illustrations in English. It explains the colour principles used by Clino Castelli in styling cars. It also shows his "matrix" system and his fibre matching device.