Does the staircase that looks short have green color?
No, the staircase is white.
    src        edge_attr  dst
0     0   to the left of    2
1     1  to the right of    8
2     2  to the right of    4
3     2  to the right of    7
4     2  to the right of    8
5     2  to the right of    9
6     2  to the right of    0
7     2  to the right of    3
8     3   to the left of    2
9     4   to the left of    2
10    7   to the left of    2
11    8   to the left of    1
12    8   to the left of    2
13    9   to the left of    2