Generates a collection of colors for a list of barcodes based on their identified minimum hamming distances.
.generateColors(minHD, type = "rainbow", alpha = 1)
a numeric vector of all the minimum hamming distances.
a character string. Possible Values are "rainbow", "heat.colors", "topo.colors", "greens", "wild".
a numeric value between 0 and 1, modifies colour transparency.