Color Bar TV Screen Sticker
High quality vinyl sticker measures 3" x 3" and is designed by the supremely talented Merch Motel in sunny California.
SMPTE color bars are a test pattern that video experts use to compare with specified standards to detect if the video signal has been tampered with during transmission or recording. This will help them figure out what they need to restore the video signal to its original state. -- excerpt from tvtotalkabout.com
Read more about color bars at https://en.wikipedia.org/wiki/SMPTE_color_bars