Which device is not blue?
The device is a keyboard.
    src        edge_attr  dst
0     0          wearing    7
1     0     reflected in    9
2     0      in front of    6
3     1           behind    9
4     1               on    5
5     6           behind    0
6     6   to the left of    7
7     7  to the right of    6
8     7  to the right of   10
9     8             near    9
10    9             near    8
11    9       mounted on    8
12    9      in front of    1
13   10   to the left of    7