Fire 204 byte

//Fire 204 byte
//Fastled 16x16 rgb led matrix demo
//Yaroslaw Turbin, 23.11.2020
//https://vk.com/ldirko
//https://www.reddit.com/user/ldirko/

//for one tweet codegolf competition
//https://www.reddit.com/r/FastLED/comments/jyly1e/challenge_fastled_sketch_that_fits_entirely_in_a/
//https://twitter.com/skullctf/status/1329474477185445890

//look how it look in online emulator:
//https://wokwi.com/arduino/projects/283144661871100428

#include <FastLED.h>
CRGB d[256];byte i;void setup(){LEDS.addLeds<WS2812,3,GRB>(d,256);}void loop(){d[i]=HeatColor(qsub8(inoise8(i%16*40,i*3+millis(),millis()/4),abs8(i/16-15)*17));i++;if(!i)LEDS.show();}