Solution 1:
Try building the plot,
g <- ggplot_build(p)
unique(g$data[[1]]["fill"])
fill
1 #1B9E77
16 #D95F02
28 #7570B3
How to extract the fill colours from a ggplot object?
Solution 1:
Try building the plot,
g <- ggplot_build(p)
unique(g$data[[1]]["fill"])
fill
1 #1B9E77
16 #D95F02
28 #7570B3