It would be nice to have a blue ocean.
Color is already used on the map for other elements (forests, being the prime example), and I think showing the ocean as a nice blue would help spruce up the map a little.
As it is, the cloth map has kind of a dull atmosphere to it.
Behold my primitive mock-up below:
(and if you do change it, please do a better job than me
)
[Original screenshot]

[Crudely colored but less dreary ocean. Ignore that river.]
