Hi, I was trying to edit the world one map, but came across a few issues.
Here is the link to the picture: https://drive.google.com/file/d/1q0YmYf5lYQ2ZSCnp2kp5pxBbPdKeiuC-/view?usp=sharing
The green parts arrows are pointed to I cannot figure out how to change the colour to blue, to match the snow/ice theme. Any help would be much appreciated. Thank you!

Try using apicula to extract the map, edit it in blender and reimport back as NSBMD with MKDSCMLast (or ass2imd and imd2nsbmd)