Over the past two decades, conservators and curators have often noted colour changes in Van Gogh paintings. The light-sensitive pigments responsible for these colour changes have been identified and their degradation mechanisms investigated. Yet, our actual knowledge of the time-scale of this problem is rather limited. To what extent has the observed fading and discoloration in Van Gogh’s paintings now stabilized? Or if still ongoing, how fast does it occur? In other words, can we expect to see colour changes taking place in Van Gogh’s paintings over the next ten years or so?