Hi,

I wanted to change the default colors appearing in boxplot. For example, the
following code (from the package/documentation):

===========
library(ggplot2)

p <- ggplot(mtcars, aes(factor(cyl), mpg))
p + geom_boxplot(aes(fill = factor(am)))

===========

Gives the default colors. What do I need to do to modify this so that:

1. Change the colors from green and red to blue and black
2. Only have the outline of the boxplot colored (and not fill in the box)


thanks,

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