This tool visualizes in a timeline how artists change their color palette over time.
As a example model we took most of Pablo Picasso's paintings using Europeana's API and analyzed the colors using some custom made scripts and visualized using a Processing sketch.
He is well known to have transitioned through different color palettes in different life periods such as the publicly called blue and pink periods as it can be seen in the following pictures.
Europeana Hack4europe event. Barcelona.