Take the code and put it in your backpack. For a VERY light image use the default(white) background. For medium, use "Blue Sky 2." For the best in my opinion, witch is the one I used, use "Blue Sky 3." Feel free to use this add-on for any background or sprite!
K-2so11 showed mean how to make random flashy lights, so I slowed down the process by changing the 25 to 1.5. Thanks for the help!