/*!
    \example demos/chartthemes
    \title Chart themes demo
    \subtitle

    This demo shows the look and feel of the different built in themes for all supported chart types.
    The background palette of the application is also customized according to the selected theme, to make the result
    look harmonious.
    \image demo_chartthemes_light.png
    \image demo_chartthemes_brown_sand.png
    \image demo_chartthemes_blue_cerulean.png
*/