search for: psychopathology

I'd like to create a plot similar to this one from Kochanska et al. (Development and Psychopathology, 2011): <http://pages.videotron.com/do999/r-help/Kochanska_graph_ros.jpg> http://pages.videotron.com/do999/r-help/Kochanska_graph_ros.jpg I am new to ggplot2 and can't see any obvious way to create distinct coloured regions for the background, nor can I find any relevant examples...

...31L, 32L, 33L, 28L, 30L, 29L, 25L, 26L, 27L, 22L, 24L, 23L, 19L, 20L, 21L, 16L, 18L, 17L, 15L, 13L, 14L, 12L, 10L, 11L, 7L, 9L, 8L, 6L, 4L, 5L, 1L, 2L, 3L), class = "data.frame") -- Edward H Patzelt | Clinical Science PhD Student Psychology | Harvard University Systems Neuroscience of Psychopathology Laboratory [[alternative HTML version deleted]]