Index: /trunk/styles/standard/elemstyles.mapcss
===================================================================
--- /trunk/styles/standard/elemstyles.mapcss	(revision 9008)
+++ /trunk/styles/standard/elemstyles.mapcss	(revision 9009)
@@ -49,4 +49,10 @@
   label: tr("Display fill colour of areas with place=*");
   default: false;
+}
+
+setting::partial_fill {
+  type: boolean;
+  label: tr("Areas are drawn with fill only around their inner edges");
+  default: true;
 }
 
@@ -4798,4 +4804,12 @@
 }
 
+/*************/
+/* Area fill */
+/*************/
+
+area[setting("partial_fill")] {
+    fill-extent: 25;
+}
+
 /* "deprecated" tags 
      historic=museum -> tourism=museum