diff --git a/HISTORY.md b/HISTORY.md
index 1ede2723..c23c12f1 100644
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -8,6 +8,11 @@ http://visjs.org
 - Properly fixed the _lockedRedraw method.
 - Fixed node resizing on dragging.
 
+### Graph3d
+
+- Do not change `backgroundColor` when not provided in options. Thanks @ozydingo.
+
+
 ## 2015-07-03, version 4.4.0
 
 ### General
diff --git a/lib/graph3d/Graph3d.js b/lib/graph3d/Graph3d.js
index 27ccc961..20c7b6b1 100644
--- a/lib/graph3d/Graph3d.js
+++ b/lib/graph3d/Graph3d.js
@@ -1512,7 +1512,7 @@ Graph3d.prototype._redrawDataGrid = function() {
           else  {
             v = 1;
             fillStyle = this._hsv2rgb(h, s, v);
-            strokeStyle = this.axisColor;
+            strokeStyle = this.axisColor; // TODO: should be customizable
           }
         }
         else {
@@ -1530,7 +1530,7 @@ Graph3d.prototype._redrawDataGrid = function() {
         ctx.lineTo(top.screen.x, top.screen.y);
         ctx.closePath();
         ctx.fill();
-        ctx.stroke();
+        ctx.stroke(); // TODO: only draw stroke when strokeWidth > 0
       }
     }
   }