#include <Adafruit_NeoPixel.h>

#define PIN        6       // Data pin
#define NUMPIXELS  16      // Number of LEDs

Adafruit_NeoPixel strip(NUMPIXELS, PIN, NEO_GRB + NEO_KHZ800);

void setup() {
  strip.begin();
  strip.show(); // Initialize all pixels to 'off'
}

void loop() {
  // RED
  for (int i = 0; i < NUMPIXELS; i++) {
    strip.setPixelColor(i, strip.Color(255, 0, 0));
    strip.show();
    delay(100);
  }
  delay(100);

  // GREEN
  for (int i = 0; i < NUMPIXELS; i++) {
    strip.setPixelColor(i, strip.Color(0, 255, 0));
    strip.show();
    delay(100);
  }
  delay(100);

  // BLUE
  for (int i = 0; i < NUMPIXELS; i++) {
    strip.setPixelColor(i, strip.Color(0, 0, 255));
    strip.show();
    delay(100);
  }
  delay(100);

  // YELLOW
  for (int i = 0; i < NUMPIXELS; i++) {
    strip.setPixelColor(i, strip.Color(255, 255, 0));
    strip.show();
    delay(100);
  }
  delay(100);

  //PINK
  for (int i = 0; i < NUMPIXELS; i++) {
    strip.setPixelColor(i, strip.Color(128, 0, 128));
    strip.show();
    delay(100);
  }
  delay(100);
}