I have two problems that may be related.

1. I draw edges in different colours if their "weight" is positive or negative. However, the edge arrows always appear in one colour. How can I fix this?

2. In the CSS, file there is a way to specify a hover behaviour for the vertices. I would like to do the same with the edges. How can I do this?

On a related note, it would be really nice to have a detailed manual of sorts.

Thanks,
Ozan