This post describes how to get a long color palette with R and the RColorBrewer package.
RColorBrewer package is a great tool when it comes
to build a color palette with R. However, the default palettes give
only about 10 different colors. Here is a tip to get more colors in
a graph, still using this useful package. Basically, it relies on
colorRampPalette() function to extand a first
Note: visit this post for a complete list of the available palettes.