
.... the subway (métro) has lines, all numbered. On the map there are four shades of green for lines 3, 6, 9, and 12; magenta, pink, pale violet and deep purple for lines 4, 7, 8 and 14 respectively; mustard yellow for line 10, bright yellow for the flagship line 1, orange for line 5, brown for line 11, dark blue and light blue for lines 2 and 13 respectively.
Very pretty, and not difficult to understand