AIC2020 International Symposium on "Natural Colours -- Digital Colours" <br />Session 2_2 COLOUR, ENVIRONMENT and SUSTAINABLE DEVELOPMENT, Sustainability, health, biodiversity, lifespace, landscape, urban planning, building materials, etc. — Second Part (End). Chairwoman: Sonia Ovarlez (CFC) <br /> <br />Delphine Talbot: Color design research and developments with natural dye