title: JUNG2 - how to set custom egde color/thick transformer
body: <p>In my app i want to set every egde with diffrent style. It can be edge colour or edge thickness.
  I've read about transformers in JUNG, but i didn't find anytging useful.</p>
  
  <p>Do you know any way to set specific colour or line thickness to specific edge? It can be some kind of Transformer or class having methods like setWidth() or setColour(). Example would be nice;)</p>