I am currently using the demo version, 90% sure I will purchase. However, I am unable to change the depth coloration for the map. I have changed all the options but when I update the map nothing happens, is this because it is the trial version. I also am curious about the ability to export the maps into CAD. Please Advise, Thank you

To change colours within the map you need to select a palette for whichever layer is providing colours - this could be isobaths, flat raster or shaded relief. See the manual section on map layers for more information.