Go to Red Alert with this Live Wallpaper!
A live wallpaper imitating the Star Trek Red Alert signal.
Check out the free version to get an impression of the wallpaper.
This version - besides supporting the dev - has more options and stuff to choose from.
"Read Contacts/SMS" permissions are used to switch the alert on new Phone Calls/SMS. "Read Logs" is used to trigger on events in third-party apps. No Networking permissions are requested.