#include <Adafruit_NeoPixel.h>
#ifdef __AVR__
  #include <avr/power.h>
#endif

//sert out signal pin
#define PIN 11 // whatever pin you plugged strip into

//create an instance of the library - call it "strip"
//first parameter is number of lights
//second parameter is pin plugged into
Adafruit_NeoPixel strip = Adafruit_NeoPixel(5, PIN, NEO_GRB + NEO_KHZ800);

int btnPin1 = 2;
int btnPin2 = 4;
int ledPin1 = 11;

void setup() {

  pinMode(btnPin1, INPUT);
  pinMode(btnPin2, INPUT);
  pinMode(ledPin1, OUTPUT);

  //start the strip
  strip.begin();
  //initialize all the pixels to off
  strip.show();

  Serial.begin(9600);
}

void loop() {
  if(digitalRead(2) == 1){
      // iterate through array of neopixels to set color and show
    for(uint16_t i = 0; i < strip.numPixels(); i++) {
      //always set color first,  then show color
      strip.setPixelColor(i, 0, 150, 200);
      }
    }else if (digitalRead(4) == 1) {
        for(uint16_t i = 0; i < strip.numPixels(); i++) {
           strip.setPixelColor(i, 190, 0, 0);
        }
      }else {
      digitalWrite(ledPin1, LOW);
      for(uint16_t i = 0; i < strip.numPixels(); i++) {
      //always set color first,  then show color
      strip.setPixelColor(i, 0, 0, 0);
      }
    }strip.show();
}