article_snippet.sent: A programmer has created these stunning graphs to reveal the dominant colour of artworks through history .
article_snippet.sent: A programmer  extracts the relevant colour information from images or artworks found online.
article_snippet.sent: I made a visualization of the change in colors of paintings over time,' said Martin Bellander, a PhD student in psychology at the Karolinska Institute who created The graph.
article_snippet.sent: To do this, Martin Bellander, a PhD student in psychology at the Karolinska Institute who created the graph wrote software first to scrape the images of the paintings from sites where software were available for free download - BBC, Google Art Project, Wikiart, Wikimedia commons, and various museums.
article_snippet.sent: Then, A programmer  extract the relevant colour information from Wikimedia commons, and various museums, and plots A programmer  in a nice way.
article_snippet.sent: Martin Bellander, a PhD student in psychology at the Karolinska Institute who created the graph found the paintings change over time - from orange to blue. '
article_snippet.sent: The changes in color might be a results of a combination of factor,' Martin Bellander, a PhD student in psychology at the Karolinska Institute who created the graph wrote. '
article_snippet.sent: If we assume a smooth linear deterioration of certain colours in oil paintings, it would be possible to subtract that change and study the short term fluctuation in colour use. '
article_snippet.sent: The same graph, but with only oil paintings . '
highlights_snippet.sent: Graph show dominant colours of 94,526 artworks from 1800 to 2000 .
  