修改图例取消全选后图标的透明度和颜色

src/components/TongzhouTrafficMap.vue

@@ -2002,7 +2002,7 @@ export default {
 }
 
 .legend-item.is-inactive {
-  opacity: 0.2;
+  opacity: 0.7;
   filter: grayscale(1);
 }