修改需求

src/graphic/CanvasStyle/default.js

@@ -143,7 +143,7 @@ const MeasureLine = {
   lineWidth: 2 * coordinate.ratio,
   text: {
     fontSize: 12,
-    fillColor: "#fff",
+    fillColor: "#000",
     padding: 6 * coordinate.ratio,
     backColor: "#2F8FFF",
   },