When using FastLED keep in mind it's still not compatible with chips containing 2 or 4 LEDs (Warm/Cool White and RGBW), like many WS2812B strips available onlin

When using FastLED keep in mind it's still not compatible with chips containing 2 or 4 LEDs (Warm/Cool White and RGBW), like many WS2812B strips available online. At least in the case of RGBW the strip will work, but the white LED will remain off.