RGB LED strip with white PCB:
- strip

SK6812 RGBW LED Strip.fzpz (16.1 KB)
This part has a bus defined which connects Din to GND on the output side. I am pretty sure that is incorrect.
I would think that it needs two internal busses, one connecting the two GND sides, connector 0 and connector 3, and a second one, connection the two +5V sides, connector 2 and connector 5.
Would be great if the stripe length (i.e. the count of the LEDs) were configurable.
Unlikely to happen. The part is generic and all Fritzing cares about is the connectors, not the number of LEDS (although you may care about that!)
Peter