#include <Adafruit_NeoPixel.h>

#define BUTTON_PIN 2
#define PIXEL_PIN 6  // Digital IO pin connected to the NeoPixels.
#define PIXEL_COUNT 62

Adafruit_NeoPixel pixels = Adafruit_NeoPixel(PIXEL_COUNT, PIXEL_PIN, NEO_GRB + NEO_KHZ800);


unsigned long getColour(size_t const i) {
  if (i < 5) {
    return 0x8000ff;
  }
  if (i > 7 and i < 13) {
    return 0x800040;
  }
  return 0;
}


void setup() {
  pinMode(BUTTON_PIN, INPUT_PULLUP);
  pixels.begin();
  pixels.setPixelColor(17, 0xffffff);
  pixels.show();
  delay(777);
}

void loop() {
  for (size_t i = 0; i < 8; i++) {
    for (size_t j = 0; j < 62; j++) {
      pixels.setPixelColor(j, getColour((14 * i + j) % 16));
    }
    pixels.show();
    delay(200);
  }
}