Is there a fence that is not silver?
Yes, there is a black fence.
    src        edge_attr  dst
0     0               on   14
1     0   to the left of   11
2     1   to the left of   13
3     1   to the left of    3
4     2  to the right of    4
5     2  to the right of    8
6     3   to the left of   15
7     3  to the right of    1
8     3   to the left of    8
9     4  to the right of   13
10    4   to the left of    9
11    4   to the left of    2
12    4   to the left of    8
13    5   to the left of   12
14    6  to the right of   13
15    7   to the left of    8
16    7   to the left of    9
17    7  to the right of   13
18    8  to the right of    4
19    8  to the right of   16
20    8  to the right of   11
21    8   to the left of    9
22    8   to the left of    2
23    8  to the right of    7
24    8   to the left of   15
25    8  to the right of   13
26    8   to the left of   12
27    8  to the right of    3
28    8               of   10
29    9  to the right of    7
30    9  to the right of    8
31    9  to the right of    4
32   10           around    4
33   11  to the right of    0
34   11   to the left of    8
35   12  to the right of    5
36   12  to the right of    8
37   13   to the left of    7
38   13   to the left of    6
39   13   to the left of    8
40   13  to the right of    1
41   13   to the left of    4
42   15  to the right of    8
43   15  to the right of    3
44   16   to the left of    8