Session 3_1 COLOUR and CULTURAL HERITAGE, Material approach: past and future architecture, natural ligthing, material and digital restoration, art materials, 3D digitization technologies, … 1st Part. Chairman and Chairwoman: Sébastien Giorgis (Founder of Volubilis), Sandrine Huyard (Volubilis). Changying Xiang: The Impact of Surface Properties on Photovoltaics’ Colour Angular Sensitivity – A Comparison Study for Facade Integration Alexia Raimondo: Color in archives or color archives Zena O'Connor: Colour design and dementia: Evidence-based strategies to enhance environmental visual literacy Aurélie Mounier: Rediscover the faded colours of an 18th century tapestry kept in the Cité Internationale de la tapisserie in Aubusson (France). Haruno Tsuda: Verification of the validity of the perceived colour measurement method usingtablet devices in architecture