diff --git a/src/kiri/core/widget.js b/src/kiri/core/widget.js
index ce56e3a7..cd7ee0a0 100644
--- a/src/kiri/core/widget.js
+++ b/src/kiri/core/widget.js
@@ -796,7 +796,7 @@ class Widget {
         if (set) {
             let dark = this.api.space.is_dark();
             let cam = this.api.mode.is_cam();
-            let color = dark ? 0 : 0x888888;
+            let color = dark ? 0x444444 : 0x888888;
             let angle = this.api.conf.get().controller.edgeangle || 20;
             let edges = new THREE.EdgesGeometry(mesh.geometry, angle);
             let material = new THREE.LineBasicMaterial({ color });
diff --git a/src/kiri/mode/cam/topo3.js b/src/kiri/mode/cam/topo3.js
index a8431983..ab8136d8 100644
--- a/src/kiri/mode/cam/topo3.js
+++ b/src/kiri/mode/cam/topo3.js
@@ -123,7 +123,7 @@ export class Topo {
             const vertices = widget.getGeoVertices({ unroll: true, translate: true });
             const wbounds = widget.getBoundingBox();
             if (!inside) {
-                wbounds.expandByVector({ x: toolDiameter/2, y: toolDiameter/2, z: 0 });
+                wbounds.expandByVector({ x: toolDiameter/2 + resolution, y: toolDiameter/2 + resolution, z: 0 });
             }
 
             if (contourY) {