From 44548c4261e8630e4c2c25407abe76e09142c9f7 Mon Sep 17 00:00:00 2001
From: Mario Fetka <mario.fetka@gmail.com>
Date: Mon, 28 Jan 2013 16:21:10 +0100
Subject: [PATCH] correct convert script for new imagamagick 7.5.x.x

---
 lib/builder-utils.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/builder-utils.sh b/lib/builder-utils.sh
index 8b9b5cf..700414b 100644
--- a/lib/builder-utils.sh
+++ b/lib/builder-utils.sh
@@ -188,7 +188,7 @@ convert_image() {
 	$OUTPUT_DIR/removed_black.png
 
     # create the matte
-    convert $OUTPUT_DIR/removed_black.png -channel matte -separate  +matte \
+    convert $OUTPUT_DIR/removed_black.png -channel matte -negate -separate +matte \
 	$OUTPUT_DIR/matte.png
 
     # negate the colors