diff --git a/bash_tools.sh b/bash_tools.sh
index df34e8e..e7864dd 100644
--- a/bash_tools.sh
+++ b/bash_tools.sh
@@ -48,35 +48,8 @@ function dict(){
     python $DOTFILE_DIR/bash_tools/dict.py $1 $2
 }
 
-# Linux specific functions
-if [[ "$OSTYPE" == "linux-gnu"* ]]; then
-
-function set_wallpaper(){
-    local file=$1
-    # convert to abs path
-    if [[ ! "$file" = /* ]]; then
-        file=$(pwd)/$1
-    fi
-    gsettings set org.gnome.desktop.background picture-uri file://$file
-}
-
-fi
-
-# Mac OSX specific functions
-if [[ "$OSTYPE" == "darwin"* ]]; then
-
-function set_wallpaper(){
-    local file=$1
-    # convert to abs path
-    if [[ ! "$file" = /* ]]; then
-        file=$(pwd)/$1
-    fi
-
-    apple_script_single_desk="tell application \"Finder\" to set desktop picture to POSIX file \"$file\""
-    osascript -e "$apple_script_single_desk"
-}
-
-fi
+# set_wallpaper() function
+source $DOTFILE_DIR/bash_tools/wallpaper.sh
 
 #
 #  Command Configuration
diff --git a/bash_tools/wallpaper.sh b/bash_tools/wallpaper.sh
new file mode 100644
index 0000000..198753b
--- /dev/null
+++ b/bash_tools/wallpaper.sh
@@ -0,0 +1,35 @@
+
+# Linux specific functions
+if [[ "$OSTYPE" == "linux-gnu"* ]]; then
+
+set_gnome_wp() {
+    gsettings set org.gnome.desktop.background picture-uri "file://$1"
+    gsettings set org.gnome.desktop.background picture-uri-dark "file://$1"
+}
+
+function set_wallpaper(){
+    local file=$1
+    # convert to abs path
+    if [[ ! "$file" = /* ]]; then
+        file=$(pwd)/$1
+    fi
+    set_gnome_wp $file
+}
+
+fi
+
+# Mac OSX specific functions
+if [[ "$OSTYPE" == "darwin"* ]]; then
+
+function set_wallpaper(){
+    local file=$1
+    # convert to abs path
+    if [[ ! "$file" = /* ]]; then
+        file=$(pwd)/$1
+    fi
+
+    apple_script_single_desk="tell application \"Finder\" to set desktop picture to POSIX file \"$file\""
+    osascript -e "$apple_script_single_desk"
+}
+
+fi