No, but read it again 
He does not make clear of all those leds need to change to the same new color or from all being one single color to being all a different color.
All NeoPixels are RGB leds. Not all RGB leds are NeoPixels 
If all those 100 (RGB) leds just need to go from red to green all at the same time NeoPixels can be used but are wayyyyyyy overkill. Normal RGB leds with simple transistors in front is way simpler and a heck of a lot cheaper.