Index: osm-map-features-z17.xml
===================================================================
--- osm-map-features-z17.xml	(Revision 10393)
+++ osm-map-features-z17.xml	(Arbeitskopie)
@@ -824,7 +824,12 @@
                         <line class="highway-racetrack-core" smart-linecap="no"/>
                     </rule>
                     <else>
-                        <line class="highway-core highway-track-core" smart-linecap="no"/>
+                        <rule e="way" k="surface" v="grass">
+                            <line class="highway-core highway-track-core highway-track-core-grass" smart-linecap="no"/>
+                        </rule>
+                        <else>
+                            <line class="highway-core highway-track-core" smart-linecap="no"/>
+                        </else>
                     </else>
                 </rule>
                 <rule e="way" k="highway" v="unsurfaced">
@@ -2486,6 +2491,7 @@
             .highway-track-casing                   { stroke-width: 1.0px;   stroke: #d79331; }
             .highway-track-area-casing              { stroke-width: 0.2px; }
             .highway-track-core                     { stroke-width: 0.8px;   stroke: #ffffff; }
+            .highway-track-core-grass               { stroke: #bde3cb;}
             .highway-track-area                     { fill: #ffffff; }
             .highway-track-name                     { stroke-width: 0px;     font-size: 1.25px; }
             .highway-track-ref                      { stroke-width: 0px;     font-size: 1.25px; }

