As a side note, we've started shipping 10 color wire kits as options for our interfaces as well. They used to be all black, but the cost was no different, so we decided to go that route. It doesn't make much difference in the long run, with even CAT5 being a decent option. Where low-voltage/current wiring is concerned for your own projects, if it holds reliably in the connectors, can be handled easily, and it gets the signal from A to B, you are golden.