Modelling and Visualizing Change #19
Description
Is your feature request related to a problem? Please describe.
The Book on Domainstorytelling describes a way to visualize process changes via color and or other elements. The library should also be able to describe changes in a domain story. This should include a legend for the visualization and also a fallback in case the viewer is not able to perceive colors and or the domainstory will be printed/displayed in grayscale / monochrome.
Describe the solution you'd like
After extended theme support has landed some of the themes will already define an information or error color which often corresponds with green and red colors. Those are the same colors proposed by the book for the change types "is new" and "will change". For themes not already defining such colors, appropriate fallback colors should be defined. In addition there should be a visual difference not relying on color perception alone.