Thanks Adam. Yes I did experiment a bit with the color bar but it becomes problematic for different continuous datasets and orders of magnitude. For example sometimes displaying scientific notation (3.2 x 10^5) and effectively becomes not very useful as it is logarithmic and basically very hard to interpret. My hack was to change the top label to “More” which just indicates values at the upper end of the colour spectrum are much more than those in the lower. It can probably be tweaked but requires lots of tedius work!