diff --git a/demo/resource/assets/buch-outdoor.png b/demo/resource/assets/buch-outdoor.png
index 94a387c0..c5e5ba0f 100644
Binary files a/demo/resource/assets/buch-outdoor.png and b/demo/resource/assets/buch-outdoor.png differ
diff --git a/demo/resource/preload/bg.png b/demo/resource/preload/bg.png
index 94c21fe9..7c664c27 100644
Binary files a/demo/resource/preload/bg.png and b/demo/resource/preload/bg.png differ
diff --git a/demo/resource/preload/bgNorm.png b/demo/resource/preload/bgNorm.png
index 759b0955..58b5f005 100644
Binary files a/demo/resource/preload/bgNorm.png and b/demo/resource/preload/bgNorm.png differ
diff --git a/demo/resource/preload/moon.png b/demo/resource/preload/moon.png
index 5d215867..a6e8a39a 100644
Binary files a/demo/resource/preload/moon.png and b/demo/resource/preload/moon.png differ
diff --git a/demo/resource/preload/moonNorm.png b/demo/resource/preload/moonNorm.png
index b054a3fe..a231408d 100644
Binary files a/demo/resource/preload/moonNorm.png and b/demo/resource/preload/moonNorm.png differ
diff --git a/demo/resource/preload/orange.png b/demo/resource/preload/orange.png
index fca8c904..a1dfe83c 100644
Binary files a/demo/resource/preload/orange.png and b/demo/resource/preload/orange.png differ
diff --git a/demo/resource/preload/orangeNorm.png b/demo/resource/preload/orangeNorm.png
index bcc6f0ca..e2dc075b 100644
Binary files a/demo/resource/preload/orangeNorm.png and b/demo/resource/preload/orangeNorm.png differ