#include <Adafruit_NeoPixel.h>
 
#define PIN 6
 
Adafruit_NeoPixel strip = Adafruit_NeoPixel(7, PIN, NEO_GRB + NEO_KHZ800);
 
void setup(){  
 
    strip.begin();  
    
    strip.show();
}
 
void loop(){
 
    int a = random(256);
    int b = random(256);
    int c = random(256);
    strip.setPixelColor(random(7),a,b,c);
    strip.show(); delay(100);
    
}