I have a huge tree stored in newick format and a table with attributes for the tips. Using the package ape, I was able to put common colors to tips and branches that share the same attribute, but I would like to depict a more concrete representation, like a bar at the end, to make clear where my clusters are and which is its size. (See example in here). It seems that if I want fancier trees, I will need a more capable tool. Also, I tried with FigTree, but was able to color only the labels. Is there a good tool to do this? How?