Do the glasses that are not short have black color?
No, the glasses are blue.
    src        edge_attr  dst
0     0   to the left of    2
1     0  to the right of    1
2     0   to the left of    4
3     1   to the left of    0
4     2  to the right of    0
5     2   to the left of    7
6     3   to the left of    6
7     3   to the left of    5
8     4               on    2
9     4  to the right of    0
10    5  to the right of    3
11    6  to the right of    3
12    7  to the right of    2