#include <FastLED.h> // https://github.com/FastLED/FastLED



const uint8_t pin_leds  = 2;

CRGBArray<12> leds;
CRGBSet       right_eye = leds( 0,  5 );
CRGBSet       left_eye  = leds( 6, 11 );



void setup()
{
  FastLED.addLeds<WS2812B, pin_leds, GRB>( leds, sizeof( leds ) / sizeof( leds[0] ) );
}



void loop()
{
  right_eye        = blend( CRGB::Aqua,   CRGB::Coral,  random( 256 ) );
  left_eye( 0, 2 ) = blend( CRGB::Gold,   CRGB::Yellow, random( 256 ) );
  left_eye( 3, 5 ) = blend( CRGB::Orange, CRGB::Red,    random( 256 ) );
  FastLED.show();
  delay( 1000 );

  leds = CRGB::Black;
  FastLED.show();
  delay( 1000 );
}