show color palette for drake.
Used in both the console and plot_graph()
Your console must have the crayon package enabled.
Usage
drake_palette()
Arguments
Details
This palette applies to console output
(internal functions console() and
console_many_targets()) and the node colors
in plot_graph().
So if you want to contribute improvements to the palette,
please both drake_palette() and
visNetwork::visNetwork(nodes = legend_nodes())