#include <Adafruit_NeoPixel.h>
int pin=10;
int in_LED=40;
Adafruit_NeoPixel ring=Adafruit_NeoPixel(in_LED,pin);

void setup() {
  // put your setup code here, to run once:
ring.begin();
}

void loop() {
  // put your main code here, to run repeatedly:
for(int i=0;i<in_LED;i++){
  ring.setPixelColor(i,ring.Color(0,0,255));
  ring.show();
  delay(500);
if(i<10){
  ring.setPixelColor(i,ring.Color(255,0,0));
  ring.show();
  delay(500);
}  
else if(i>=10 and i<20){
  ring.setPixelColor(i,ring.Color(255,200,30));
  ring.show();
  delay(499);
}
else if(i>=20 and i<30){
  ring.setPixelColor(i,ring.Color(205,250,80));
  ring.show();
  delay(499);
}
}
}