Is the color of the label different than the tree?
Yes, the label is red and the tree is green.
    src        edge_attr  dst
0     1  to the right of   15
1     2           behind    8
2     2  to the right of   15
3     2  to the right of   14
4     2  to the right of   12
5     3               on    6
6     3  to the right of   19
7     3               in    6
8     3  to the right of    6
9     4  to the right of    9
10    5   to the left of   12
11    5   to the left of   19
12    5   to the left of    6
13    5  to the right of   17
14    5  to the right of   18
15    5  to the right of    7
16    6  to the right of   12
17    6   to the left of    3
18    6  to the right of   15
19    6  to the right of    5
20    7   to the left of    5
21    7   to the left of   18
22    7   to the left of   17
23    8               on    6
24    8      in front of    2
25    9   to the left of    4
26    9  to the right of   15
27   12  to the right of   15
28   12  to the right of   14
29   12   to the left of    2
30   12   to the left of   19
31   12   to the left of   13
32   12   to the left of    6
33   12  to the right of    5
34   13  to the right of   14
35   13  to the right of   12
36   13  to the right of   15
37   13               on   12
38   14   to the left of   13
39   14   to the left of   12
40   14   to the left of    2
41   14  to the right of   15
42   15             near   18
43   15   to the left of   14
44   15   to the left of   19
45   15   to the left of    1
46   15   to the left of    2
47   15   to the left of    6
48   15   to the left of    9
49   15   to the left of   13
50   15   to the left of   12
51   17  to the right of    7
52   17   to the left of    5
53   18   to the left of    5
54   18  to the right of    7
55   18          next to   15
56   19   to the left of    3
57   19  to the right of   15
58   19  to the right of   12
59   19  to the right of    5