''[Plot Parameters|http://www.jfree.org/jfreechart/javadoc/org/jfree/chart/plot/Plot.html]''\\
;backgroundpaint: Value:  [Paint|ImageGenParamPaint]. Sets the background color of the plot area.
;backgroundalpha: Value:  float. Sets the alpha transparency of the plot area background.
;nodatamessage: Value:  string. Sets the message that is displayed when the dataset is empty or null.
;outlinepaint: Value:  [Paint|ImageGenParamPaint]. 
    Sets the paint used to draw the outline of the plot area. If you set this attribute to
    null, no outline will be drawn.