for (i = 0; i < 16; i = i + 2) begin
				for (j = 0; j < 16; j = j + 2) begin
					if ( (x > (i * 80) && x < ((i + 1) * 80)) &&
						 (y > (j * 80) && y < ((j + 1) * 80)) ) begin
						red 	<= 10'b11_1111_1111;
						green 	<= 10'd0;
						blue	<= 10'd0;
						// with a blue background
					end else if ( (x > ((i + 1) * 80) && x < ((i + 2) * 80)) &&
								  (y > ((j + 1) * 80) && y < ((j + 2) * 80)) ) begin
						red		<= 10'd0;
						green	<= 10'd0;
						blue	<= 10'b11_1111_1111;
					end
				end
			end