#include <Adafruit_NeoPixel.h>

#define NUMPIXELS        1  // number of neopixels (single)
#define PIN_NEOPIXEL     6  // for emulator or Pico

Adafruit_NeoPixel pixels(NUMPIXELS, PIN_NEOPIXEL, NEO_GRB + NEO_KHZ800);

void setup() {
  pixels.begin();           // initialize neopixel(s)
  pixels.setBrightness(220); // set brightness (0 low, 255 high)
  pixels.fill( pixels.Color(0, 255, 255) );    // set pixel color (RGB magenta)
  pixels.show();            // show pixels (necessary!)
}

void loop() {
pixels.fill( pixels.Color (random(100, 255), random(100, 255),random(100, 255))); 
pixels.show();
delay(500);
}