Arduino Neopixel Auto Blinker

AutoBlinker.ino

#include <FastLED.h>

// How many leds in your strip?
#define NUM_LEDS 46 

// For led chips like Neopixels, which have a data line, ground, and power, you just
// need to define DATA_PIN.  For led chipsets that are SPI based (four wires - data, clock,
// ground, and power), like the LPD8806, define both DATA_PIN and CLOCK_PIN
#define DATA_PIN 2
//#define CLOCK_PIN 13

int buttonPin = 4;     // the number of the pushbutton pin

// Define the array of leds
CRGB leds[NUM_LEDS];

void setup() { 
	LEDS.addLeds<WS2812,DATA_PIN,GRB>(leds,NUM_LEDS);
	LEDS.setBrightness(128);
  pinMode(buttonPin, INPUT);
}

void fadeall() { for(int i = 0; i < NUM_LEDS; i++) { leds[i].nscale8(250); } }

void loop() {
  int buttonState = digitalRead(buttonPin);
      
	static uint8_t hue = 0;

	for(int i = 0; i < NUM_LEDS; i++)
	{
  if(buttonState == HIGH) // check if the pushbutton is pressed. If it is, the buttonState is HIGH:
		// Set the i'th led to orange 
		leds[i] = CRGB(255, 130, 0);
		// Show the leds
		FastLED.show(); 
		fadeall();
		// Wait a little bit before we loop around and do it again
		delay(10);
	}
  for(int i = 0; i < NUM_LEDS; i++)
  {
    if(buttonState == HIGH)
    // Set the i'th led to black 
    leds[i] = CRGB(0, 0, 0);
    // Show the leds
    FastLED.show(); 
    fadeall();
    // Wait a little bit before we loop around and do it again
    delay(10);
  }
    while(digitalRead(buttonPin) == LOW) // check if the pushbutton is pressed. If not, the buttonState is LOW:
    {
    //wait until the button is pressed again
    }
}