diff --git a/.gitignore b/.gitignore
index 5530279..6d2c8ac 100644
--- a/.gitignore
+++ b/.gitignore
@@ -9,3 +9,4 @@ slides.nav
 exports
 preview/*.pdf
 covers.jpg
+*.synctex.gz
diff --git a/Keynote/default/dolphin.key b/Keynote/default/dolphin.key
new file mode 100644
index 0000000..4098e25
--- /dev/null
+++ b/Keynote/default/dolphin.key
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:8decbe0dabf3f0075db4f854626ffd3c12718e6c98469835eade7e071ab67782
+size 1072858
diff --git a/PowerPoint/default/dolphin.pptx b/PowerPoint/default/dolphin.pptx
new file mode 100644
index 0000000..8ca953e
--- /dev/null
+++ b/PowerPoint/default/dolphin.pptx
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:010929c2abee172bf1eccc9d1be1b793e4d38be8ed879644ca62b9b7c70da792
+size 78608
diff --git a/README.md b/README.md
index 47744a7..17d4a44 100644
--- a/README.md
+++ b/README.md
@@ -35,7 +35,7 @@ git clone https://github.com/wzpan/BeamerStyleSlides.git
 
 | collection | default | beaver | crane | dolphin | dove | lily | orchid | rose | seagull | seahorse | whale | wolverine |
 | -----      | ------- | ------ | ----- | ------- | ---- | ---- | ------ | ---- | ------- | -------- | ----- | --------- |
-| default | [default-default] | [default-beaver]    | [default-crane] | TBD | TBD | TBD | TBD | TBD | TBD | TBD | TBD | TBD |
+| default | [default-default] | [default-beaver]    | [default-crane] | [default-dolphin] | TBD | TBD | TBD | TBD | TBD | TBD | TBD | TBD |
 | AnnArbor | [AnnArbor-default] | TBD | TBD | TBD | TBD | TBD | TBD | TBD | TBD | TBD | TBD | TBD |
 | Antibes | [Antibes-default] | TBD | TBD | TBD | TBD | TBD | TBD | TBD | TBD | TBD | TBD | TBD |
 | Berlin | [Berlin-default] | TBD | TBD | TBD | TBD | TBD | TBD | TBD | TBD | TBD | TBD | TBD |
@@ -116,6 +116,7 @@ git clone https://github.com/wzpan/BeamerStyleSlides.git
 [default-default]: https://github.com/wzpan/BeamerStyleSlides/blob/master/preview/default-default.jpg
 [default-beaver]: https://github.com/wzpan/BeamerStyleSlides/blob/master/preview/default-beaver.jpg
 [default-crane]: https://github.com/wzpan/BeamerStyleSlides/blob/master/preview/default-crane.jpg
+[default-dolphin]: https://github.com/wzpan/BeamerStyleSlides/blob/master/preview/default-dolphin.jpg
 [AnnArbor-default]: https://github.com/wzpan/BeamerStyleSlides/blob/master/preview/AnnArbor-default.jpg
 [Antibes-default]: https://github.com/wzpan/BeamerStyleSlides/blob/master/preview/Antibes-default.jpg
 [Berlin-default]: https://github.com/wzpan/BeamerStyleSlides/blob/master/preview/Berlin-default.jpg
diff --git a/benchmark/slides.synctex.gz b/benchmark/slides.synctex.gz
deleted file mode 100644
index 3c73a0c..0000000
Binary files a/benchmark/slides.synctex.gz and /dev/null differ
diff --git a/preview/default-dolphin-cover.jpg b/preview/default-dolphin-cover.jpg
new file mode 100644
index 0000000..54fc683
Binary files /dev/null and b/preview/default-dolphin-cover.jpg differ
diff --git a/preview/default-dolphin.jpg b/preview/default-dolphin.jpg
new file mode 100644
index 0000000..457225a
Binary files /dev/null and b/preview/default-dolphin.jpg differ