and the easiest way to build this is with a bunch of individually addressable RGB LEDs. [Ole] has a great introduction to driving RGB LED matrices using only five data pins on a microcontroller.

Individually addressable RGB LEDs like Neopixels, WS2812s, and WS2811s are the defacto standard for making blinkey glowey projects. To build a very bright display, you need a lot of them ...

ARGB (addressable red green blue) and RGB (red green blue ... you can now also control each individual LED, offering many more options and combinations. The effects when using ARGB are pretty ...