Map<String, Color?> toMap() { return { "BW-CE": bwCE, "BW-GH": bwGH, "BW-KG": bwKG, "BW-KL": bwKL, "BW-KW": bwKW, "BW-NE": bwNE, "BW-NW": bwNW, "BW-SE": bwSE, "BW-SO": bwSO, }; }