Hello, The code below produces a plot in colour, however, the results will typically be printed in black and white. I am hoping for advice regarding how the I might obtain a plot in which the red au values are in bold lettering and the green bp plots are italicised. The text in the plot is too large given the number of clusters - the data set is just provided for illustrative purposes. library(pvclust) data(lung) lung[1:3,1:5] result <- pvclust(lung, method.dist="cor", method.hclust="average", nboot=1000) plot (result, cex.axis =1.0, cex.pv=3.0,cex = 2.0, cex.lab = 1.5) Any assistance is appreciated, Bob