This images uses some crazy amount of copper trickery to extend the 16 base colors to a total of over 120 colors.
But the Amiga version falls behind in comparison to the Atari ST version where over 150 colors are created, despite the Atari ST's lack of a copper chip.
Fighting more with the restrictions of the Atari ST the game over screen would have actually been possible without copper effects but this way the image was made to fit inside 16 colors by switching the palette between the green part of the snakes head and the fiery red mouth.