Always Random Color LED Ring ESP32

#include <Adafruit_NeoPixel.h>
#ifdef __AVR__
 #include <avr/power.h>
#endif
#define PIN 21
#define NUMPIXELS 24
Adafruit_NeoPixel pixels(NUMPIXELS, PIN, NEO_GRB + NEO_KHZ800);

void setup() {
#if defined(__AVR_ATtiny85__) && (F_CPU == 16000000)
  clock_prescale_set(clock_div_1);
#endif

  pixels.begin();
}

void loop() {
  int r = random(0, 256);
  int g = random(0, 256);
  int b = random(0, 256);

  for(int i = 0; i < NUMPIXELS; i++) {
    pixels.setPixelColor(i, pixels.Color(r, g, b));
    pixels.show();
    delay(50);
  }
}