Alternative colors for rivers and lakes (height map), it will be very good for precise coordinates of rivers, thereunto water lines smooth from rocks, so it is second request, here first http://forum.simutrans.com/index.php?topic=14425.0
(http://fortworthtexas.gov/uploadedImages/Transportation_and_Public_Works/Projects/ForestParkBerryCentralAH/watershed%5B1%5D.jpg)
(http://seagrant.noaa.gov/Portals/0/EasyGalleryImages/2/72/Watershed%20basemap.png)