Dear All, I am struggling with heatmap to plot RNA-seq data, my dataset values range from -8 to 10(logFC), I would like to use some colours that can display differencies in all ranges, I tried with heatmap.2(a,col=greenred(75)) but somehow values from 8 to 9 are stack together and I cannot appreciate differencies, Attached is somehow what I would like, Thanks, Paolo