#include <FastLED.h>

#define LED_PIN     5
#define NUM_LEDS    3

CRGB leds[NUM_LEDS];

void setup() {
 
  FastLED.addLeds<WS2812, LED_PIN, GRB>(leds, NUM_LEDS);
  
}

void loop() {

  leds[0] = CRGB(255, 0, 255);
  FastLED.show();
  delay(600);  
  leds[1] = CRGB(0, 255, 0);
  FastLED.show();
  delay(200);
  leds[2] = CRGB(255, 0, 255);
  FastLED.show();
  delay(100);
  leds[0] = CRGB(0, 255, 0);
  FastLED.show();
  delay(700);  
  leds[1] = CRGB(255, 0, 255);
  FastLED.show();
  delay(600);
  leds[2] = CRGB(0, 255, 0);
  FastLED.show();
  delay(500);
  leds[0] = CRGB(255, 0, 255);
  FastLED.show();
  delay(500);  
  leds[1] = CRGB(0, 255, 0);
  FastLED.show();
  delay(300);
  leds[2] = CRGB(255, 0, 255);
  FastLED.show();
  delay(600);
  leds[0] = CRGB(0, 255, 0);
  FastLED.show();
  delay(600);  
  leds[1] = CRGB(255, 0, 255);
  FastLED.show();
  delay(400);
  leds[2] = CRGB(0, 255, 0);
  FastLED.show();
  delay(300);
}