Update index.html

public/index.html

@@ -55,7 +55,7 @@
 							<li><span style='background:#D4E6F1;'></span>Technical (Engineering) Infrastructure</li>
 							<li><span style='background:#1E8449;'></span>Recreational Facility</li>
 							<li><span style='background:#DAF7A6;'></span>Natural Space</li>
-							<li><span style='background:#808080;'></span>Agriculture</li>
+							<li><span style='background:#785027;'></span>Agriculture</li>
 							<li><span style='background:#5D6D7E;'></span>Street Space</li>
 							<li><span style='background:#D6DBDF;'></span>Other Traffic Use</li>
 							<li><span style='background:#5DADE2;'></span>Water Body</li>