diff --git a/src/Selection.js b/src/Selection.js
index d08fd83..385eaa8 100644
--- a/src/Selection.js
+++ b/src/Selection.js
@@ -140,10 +140,7 @@ Selection.prototype.cut_out_background = function(){
 		// this is mainly in order to support patterns as the background color
 		// NOTE: must come before cutout canvas is modified
 		var colored_cutout = new Canvas(cutout);
-		// TODO: use replace_colors_with_swatch with sel.x, sel.y to support patterns properly (fix the offset)
-		colored_cutout.ctx.globalCompositeOperation = "source-in";
-		colored_cutout.ctx.fillStyle = colors.background;
-		colored_cutout.ctx.fillRect(0, 0, colored_cutout.width, colored_cutout.height);
+		replace_colors_with_swatch(colored_cutout.ctx, colors.background, sel.x, sel.y);
 		var colored_cutout_image_data = colored_cutout.ctx.getImageData(0, 0, sel.width, sel.height);
 	// }