diff --git a/src/DatabaseServices/Entity/Extrude.ts b/src/DatabaseServices/Entity/Extrude.ts
index 2f33df6e0..bddd1f1ed 100644
--- a/src/DatabaseServices/Entity/Extrude.ts
+++ b/src/DatabaseServices/Entity/Extrude.ts
@@ -387,6 +387,8 @@ export class ExtrudeSolid extends Entity
     {
         if (!this.contourCurve)
             this.GeneralRectContour();
+        // 默认轮廓都是白的
+        this.contourCurve.ColorIndex = 7;
         return this.contourCurve;
     }