XTREME Multicolor LED Gaming Mouse, 4 Selective DPI Modes, LED Fade Lighting Effect, Fast and Easy Installation XCA2-1014-BLK - The Home Depot
colors - Fade through more more natural rainbow spectrum in HSV/HSB - Stack Overflow
3 mm clear lens RGB LED with fast fade and blink pattern
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Pixel reference · FastLED/FastLED Wiki · GitHub
LED Dimmer | Fade-in Fade-out LED Dimmer from Oznium
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Diffused 5mm Fast Flashing RGB LED - 10 pack [Flashing Effect] : ID 680 : $4.95 : Adafruit Industries, Unique & fun DIY electronics and kits
How to fade 5 LEDs in a defined time using FastLED - Programming Questions - Arduino Forum