ws2811 led candle code

Hi Im trying to Make a flickering candle mood lamp. I have 20 12v ws2811 LEDs running around the outside of the lamp and 2 leds that I want to make the actual candle. LED number 21 22 My problem is I don’t know very much about code, I would also like to add a button that will cycle colour mood. like just the candle(LED 21 and 22) press it again and it make the rest of the lights come on and enhance the the light from the flame in the center. then press it again and have it do the same but with a different colour.

if someone could help that would be great