Arduino WS2811 Pixel LED Christmas Tree Lights

// Include NeoPixel library
 #include <Adafruit_NeoPixel.h>

// Data pin for the pixel string
 #define PIN 6

// Change this to the number of LEDs on your string
 #define NUMPIXELS 50

// Loads NeoPixel
 Adafruit_NeoPixel pixels = Adafruit_NeoPixel(NUMPIXELS, PIN, NEO_RGB + NEO_KHZ800);

// Delay between twinkles
 int delayval = 100;
 // Initialize LED variable
 int led = 0;
 // Initialize RGB variable
 int rgb =0;
 // Define max LEDs
 int maxLED = NUMPIXELS;

// Starts the library
 void setup() {
 pixels.begin();
 }

// Show begins

 void loop() {
 // Picks a random LED
 led=random(0,maxLED);
 // Sets pixel to white
 pixels.setPixelColor(led,pixels.Color(255,255,125));
 pixels.show();
 // Waits per delayval
 delay(delayval);
 // Picks a random color
 rgb=random(1,6);

// Switches LED to random color
 switch (rgb) {
 case 1:
 pixels.setPixelColor(led,pixels.Color(100,0,0));
 pixels.show();
 break;

case 2:
 pixels.setPixelColor(led,pixels.Color(0,255,0));
 pixels.show();
 break;

case 3:
 pixels.setPixelColor(led,pixels.Color(0,0,255));
 pixels.show();
 break;

case 4:
 pixels.setPixelColor(led,pixels.Color(255,0,255));
 pixels.show();
 break;

case 5:
 pixels.setPixelColor(led,pixels.Color(0,255,255));
 pixels.show();
 break;

case 6:
 pixels.setPixelColor(led,pixels.Color(255,0,255));
 pixels.show();
 break;
 }

}

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