Try this: You can make little isles for example from next objects (if you don't need them): TOWNLAY, CITY and LAVA. Make them new skins and it works pretty good! Remember create the grayscale map (for ex. CITY_a.bmp) too...
I use them to three different looking little isles in my Finland-Russia map's lakes (We have in Finland over 100 000 lakes and millions of little isles). Now the landscape is more better and very natural looking!
I have made a new LAKE1.bmp, too. It is same colour than my water tile and looks very good in my map.
I try to put here couple of pictures in this week...
