'm submitting a new BoxAndWhiskerRenderer with the following enhancements in SourceForge Patches.
- Colors for the outliers and farouts can be set.
- The radius of the outliers and farouts are constant. They do not depend on the width of the boxes.
- drawing all the outliers and all the farouts.
- tooltips for the outliers and farouts.
I have also modified the BoxAndWhiskerToolTipGenerator so that tooltips are generated even if some of the values are null.