diff --git a/submarine/blink.sh b/submarine/blink.sh
new file mode 100755
index 0000000..6ba6870
--- /dev/null
+++ b/submarine/blink.sh
@@ -0,0 +1,7 @@
+#!/bin/bash
+
+for i in `seq 6`;
+do
+    submarine.sh
+    sleep 0.5
+done
diff --git a/submarine/submarine.sh b/submarine/submarine.sh
new file mode 100755
index 0000000..a8affb7
--- /dev/null
+++ b/submarine/submarine.sh
@@ -0,0 +1,36 @@
+#!/bin/bash
+
+if [[ $(pgrep -c redshift) = 0 ]]; then
+    echo "redshift not running"
+    START=1
+else
+    echo "redshift already running"
+    START=0
+fi
+
+xrandr --verbose -q | grep Gamma | grep -q "1.0:1.0:1.0";
+#if [[ "$*" = "on" ]]; then
+if [ $? == 0 ]; then
+  echo Making screen red
+  if [[ $START = 0 ]]; then
+      notify-send "stopping redshift"
+      pkill -STOP redshift
+      sleep .2
+  fi
+  redshift -rPO1500
+#elif [[ "$*" = "off" ]]; then
+else
+    redshift -x
+    if [[ $START = 0 ]]; then
+        echo "cont red"
+        notify-send "continuing redshift"
+        pkill -CONT redshift
+    else
+        echo "start red"
+        notify-send "starting redshift"
+        redshift &
+    fi
+#else
+#  echo "requires one of: 'on', 'off'"
+#  exit 1
+fi