How to achieve this

Hello

I wanted to do this on my stairwell. https://www.youtube.com/watch?v=9-N8WYD3H4g

I have WS2812B strips but can someone please point me to what the code may be? I have tried examples with FastLed library and all seems well.

I am waiting for the motion sensors to arrive so even without this part for now will suffice for testing purposes.

Thanks.

What is your question, you state “I have tried examples with FastLed library and all seems well.”?

The link to the code for that project is under the video on YouTube.