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#include <FastLED.h>
#define NUM_LEDS 16
#define DATA_PIN 24
CRGB leds[NUM_LEDS];
int i;
void setup() { 
      FastLED.addLeds<NEOPIXEL, DATA_PIN>(leds, NUM_LEDS);
}
void loop() { 
  for (i=0;i<16;i++){
    leds[i] = CRGB::Red;
    FastLED.show(); delay(50);
  }
  for (i=0;i<16;i++){
    leds[i] = CRGB::Green;
    FastLED.show(); delay(50);
  }
  for (i=0;i<16;i++){
    leds[i] = CRGB::Blue;
    FastLED.show(); delay(50);
  }
  for (i=0;i<16;i++){
    leds[i] = CRGB::Yellow;
    FastLED.show(); delay(50);
  }
  for (i=0;i<16;i++){
    leds[i] = CRGB::White;
    FastLED.show(); delay(50);
  }
  for (i=0;i<16;i++){
    leds[i] = CRGB::Black;
    FastLED.show();delay(50);
  }
}