Does the clock to the left of the other clock look black?
Yes, the clock is black.
    src        edge_attr  dst
0     0   to the left of    8
1     0   to the left of    7
2     2               on    0
3     2       mounted on    0
4     2            below    4
5     2  to the right of    6
6     3   to the left of    8
7     3   to the left of    4
8     4  to the right of    3
9     4            above    2
10    5   to the left of    8
11    6   to the left of    8
12    6   to the left of    2
13    7  to the right of    0
14    8  to the right of    3
15    8  to the right of    0
16    8  to the right of    6
17    8  to the right of    5