This video shows how to remove a bad pixel from a string.
Failure Pattern: Sometimes the LED on a Pixel node will malfunction resulting in the wrong color. In this case just the single node/bulb needs to be removed.
Materials:
Pixels are 12v, 12mm, WS2811 nodes
3M Scotchlok IDC Butt Connector, 100 Pack Yellow
https://www.amazon.com/gp/product/B0076AY6J8
Platinum Tools 12100C Connector Pressing Telcom Pliers
https://www.amazon.com/Platinum-Tools-12100C-Connector-Pressing/dp/B00099HTJM