Solution: http://learnr.wordpress.com/2009/10/22/ggplot2-two-color-xy-area-combo-chart/ -- View this message in context: http://r.789695.n4.nabble.com/Moving-averages-shading-two-colours-polygon-tp4679460p4679479.html Sent from the R help mailing list archive at Nabble.com.