Adjustable height color range

When the legend is open you can now left click on it to set the start of the color range or right click to set the end of the color range.
I have been hunting for a stock shuttle landing strip on Duna so needed to view a detailed height map for the 300-800 meters range and this allows me to see that detail.
Love your work so i tried to make it better, thanks for all the hard work.