diff --git a/book/_static/dwq2-dark.png b/book/_static/dwq2-dark.png
index 8d01292..6e75b30 100644
Binary files a/book/_static/dwq2-dark.png and b/book/_static/dwq2-dark.png differ
diff --git a/book/_static/dwq2-light.png b/book/_static/dwq2-light.png
index 89ef6b0..e2a8c0d 100644
Binary files a/book/_static/dwq2-light.png and b/book/_static/dwq2-light.png differ
diff --git a/book/_static/favicon.ico b/book/_static/favicon.ico
old mode 100755
new mode 100644