change theme-color of nature-theme

resource/styles/agile-admin/inverse/colors/nature.scss

@@ -1,6 +1,6 @@
 @import '../variables';
 
-$themecolor:#00363d;
+$themecolor:#4d0013;
 
 $topbar:#118050;;
 $sidebar:#fff;

resource/styles/scss/_admin.scss

@@ -124,7 +124,8 @@
         fill: #118050;
       }
       .color3 {
-        fill: #00363d;
+        fill: #4d0013
+        ;
       }
     }
   }