improve NumberInfo style

src/components/NumberInfo/index.less

@@ -48,6 +48,14 @@
         transform: scale(0.82);
         margin-left: 4px;
       }
+      :global {
+        .anticon-caret-up {
+          color: @red-6;
+        }
+        .anticon-caret-down {
+          color: @green-6;
+        }
+      }
     }
   }
 }