Colors help identify and organize network lines. I really like her. They're a little tight, but that's probably a good thing, and I haven't really messed around with most of my network lines. I just wish they were longer so I can easily hook them up to other machines in other parts of my home/office and benefit from the colors there too. for laptop etc.” and then everything would be sewn in bright colors everywhere. :) I like seeing the colors and feeling "happy" when choosing a cable. It makes me a little happy even in a sticky situation when my network decides to do something weird, but that's rare.