Stick with 8 WS2812 5050 RGB LEDs. The LEDs can be controlled individually (on/off, color and brightness) with only 2 wires from e.g. an Arduino. See: https://github.com/FastLED/FastLED https://www.tweaking4all.nl/hardware/arduino/arduino-ws2812-led/ Dimensions: 57mm x 10.22mm x 3.19mm Supply voltage: 4V - 7V