diff --git a/tile-sets/udacity/1024.png b/tile-sets/udacity/1024.png
index 2a85797a83..e008a1fe89 100644
Binary files a/tile-sets/udacity/1024.png and b/tile-sets/udacity/1024.png differ
diff --git a/tile-sets/udacity/128.png b/tile-sets/udacity/128.png
index d14cfc4a15..af76dd3f83 100644
Binary files a/tile-sets/udacity/128.png and b/tile-sets/udacity/128.png differ
diff --git a/tile-sets/udacity/16.png b/tile-sets/udacity/16.png
index 56482b268c..7943aad6ca 100644
Binary files a/tile-sets/udacity/16.png and b/tile-sets/udacity/16.png differ
diff --git a/tile-sets/udacity/2.png b/tile-sets/udacity/2.png
index e1dc3f9d09..43d7ccc0f1 100644
Binary files a/tile-sets/udacity/2.png and b/tile-sets/udacity/2.png differ
diff --git a/tile-sets/udacity/2048.png b/tile-sets/udacity/2048.png
index 83b5647d14..62e7253158 100644
Binary files a/tile-sets/udacity/2048.png and b/tile-sets/udacity/2048.png differ
diff --git a/tile-sets/udacity/256.png b/tile-sets/udacity/256.png
index 51f4359fae..66472aa569 100644
Binary files a/tile-sets/udacity/256.png and b/tile-sets/udacity/256.png differ
diff --git a/tile-sets/udacity/32.png b/tile-sets/udacity/32.png
index 0b376138cd..487f0c8993 100644
Binary files a/tile-sets/udacity/32.png and b/tile-sets/udacity/32.png differ
diff --git a/tile-sets/udacity/4.png b/tile-sets/udacity/4.png
index 12d9c63466..d5322e17dd 100644
Binary files a/tile-sets/udacity/4.png and b/tile-sets/udacity/4.png differ
diff --git a/tile-sets/udacity/512.png b/tile-sets/udacity/512.png
index 7bb1eef5d6..59d02fd841 100644
Binary files a/tile-sets/udacity/512.png and b/tile-sets/udacity/512.png differ
diff --git a/tile-sets/udacity/64.png b/tile-sets/udacity/64.png
index e8215e035e..3f8ca20ced 100644
Binary files a/tile-sets/udacity/64.png and b/tile-sets/udacity/64.png differ
diff --git a/tile-sets/udacity/8.png b/tile-sets/udacity/8.png
index 76f0d84552..13cae8cc77 100644
Binary files a/tile-sets/udacity/8.png and b/tile-sets/udacity/8.png differ