Is the color of the bag different than the post?
No, both the bag and the post are black.
    src        edge_attr  dst
0     0   to the left of    7
1     0   on the back of   15
2     0  to the right of    6
3     0   to the left of   14
4     0   to the left of    8
5     1   to the left of   10
6     1  to the right of    5
7     1   to the left of    3
8     2   to the left of   13
9     2  to the right of    6
10    2   to the left of    4
11    2   to the left of   10
12    3   to the left of   10
13    3  to the right of    9
14    3  to the right of   12
15    3               in    2
16    3  to the right of    1
17    4   to the left of   11
18    4   to the left of   13
19    4        on top of   15
20    4  to the right of    2
21    4               of   15
22    4  to the right of    6
23    4   to the left of   10
24    5   to the left of   12
25    5   to the left of    1
26    6   to the left of    4
27    6   to the left of    0
28    6   to the left of    2
29    7  to the right of   15
30    7  to the right of    0
31    7  to the right of   14
32    8        on top of   15
33    8  to the right of    0
34    8       sitting on   15
35    9   to the left of   10
36    9   to the left of    3
37   10  to the right of   12
38   10  to the right of    9
39   10  to the right of    4
40   10  to the right of    3
41   10  to the right of    2
42   10  to the right of    1
43   11               of    8
44   11  to the right of    4
45   11  to the right of   15
46   12               of   15
47   12   to the left of   10
48   12   to the left of    3
49   12  to the right of    5
50   13  to the right of    2
51   13               of    8
52   13  to the right of    4
53   14               of    8
54   14   to the left of    7
55   14  to the right of    0
56   15   to the left of   11
57   15   to the left of    7