Experimenting with 2 point lights at each end with 2 different colors and a spotlight pointing down into the middle of the board with a redish color. Tried both in Eevee and Cycles. Not quiet there yet, can’t seem to get the colors quiet right yet. Trying to get the end colors to blend into the middle red, kind of a soft look but with a sense of conflict/war in the field of battle area.
Eevee
Cycles