Cloud lamp programming

/*  Cloud Lamp Programming Workshop
 *  Contributed by William Hooi/OneMaker Group Pte Ltd
 *  Based on examples provided by Adafruit NeoPixel tutorial
 * 
 */
#include <Adafruit_NeoPixel.h>
#define PIN 6 //define pin number

// Parameter 1 = number of pixels in strip
// Parameter 2 = pin number (most are valid)
// Parameter 3 = pixel type flags, add together as needed:
//   NEO_KHZ800  800 KHz bitstream (most NeoPixel products w/WS2812 LEDs)
//   NEO_KHZ400  400 KHz (classic 'v1' (not v2) FLORA pixels, WS2811 drivers)
//   NEO_GRB     Pixels are wired for GRB bitstream (most NeoPixel products)
//   NEO_RGB     Pixels are wired for RGB bitstream (v1 FLORA pixels, not v2)
Adafruit_NeoPixel strip = Adafruit_NeoPixel(60, PIN, NEO_GRB + NEO_KHZ800);

uint32_t red = strip.Color(255, 0, 0);
uint32_t green = strip.Color(0, 255, 0);
uint32_t blue = strip.Color(0, 0, 255);
uint32_t magenta = strip.Color(255, 0, 255);
uint32_t yellow = strip.Color(255, 255, 0);
uint32_t cyan = strip.Color(0, 255, 255);
uint32_t none = strip.Color(0, 0, 0);            

void setup() {
  strip.begin ();
  strip.Color(255,0,0);


}

void loop()
{
chase (red);
reverse (red);
chase (blue);
reverse (blue);
chase (green);
reverse (green);
chase (yellow);
reverse (yellow);
chase (cyan);
reverse (cyan);
chase (magenta); 
reverse (magenta); 
}

void chase (uint32_t c) {
  for (int i=0; i<30; i++){
    strip.setPixelColor(i, c);
    strip.show();
    strip.setPixelColor(i,0);
    delay (25);
  }
}

void reverse (uint32_t d) {
                                  
  for (int i=30; i>0; i--){
    strip.setPixelColor(i, d);
    strip.show();
    strip.setPixelColor(i,0);
    delay (25);
  }
}