Nice implementation. Some comments on the interface:
Make grid lines and an option to toggle them on and off
The sliders should display their value while sliding, not just when they land.
Maybe have a mode where you can "draw" with the mouse instead of clicking every cell?
The two colors need a color picker in addition to just the numbers.
Next to randomize colors button should be a swap colors button
Next to refresh button should be a clear button - to clear the board (make all cells dead) so I can experiment with a pattern from scratch
Maybe a way to save and recall the board, or a way to go back some steps. Sometimes I made something cool but can't remember how I did it.
Anyway, great work, and thanks for sharing. Did you hear that the guy that invented this game died of COVID-19 a couple weeks ago?