I've been overwhelmed by your replies to my previous post, and I thought I should try again ;-)
I've been working a bit more on this. I found bartmoss' map of a much neglected continent and liked the colors of the final result. I thought that I could work something alike into the map, and though I didn't achieve anything as pretty as bartmoss', there was a big improvement. Here's the result:
Now, as usual, my problem has a name: mountains. I don't know how to color them to make them stand out properly. Any suggestions?
Thanks in advance.