Merge pull request #595 from notmasteryet/tree-28

Set default colors to avoid invalid strokeStyle or fillStyle warnings

pdf.js

@@ -4887,6 +4887,9 @@ var CanvasExtraState = (function canvasExtraState() {
     this.strokeColorSpaceObj = null;
     this.fillColorObj = null;
     this.strokeColorObj = null;
+    // Default fore and background colors
+    this.fillColor = "#000000";
+    this.strokeColor = "#000000";
 
     this.old = old;
   }