Visually Discrete, Bi-Wire Speaker Cable

I am setting up an office system, using Arcam electronics and ProAc Tablette Reference 8 Signature speakers. I have heard the ProAcs with a variety of cables, and they do seem to benefit from bi-wiring. However, I do not want to have bulky boxes (MIT) or battery-packs (AudioQuest) hanging off the back of the little ProAcs, nor do I want any wild colors to draw attention to them. Do you folks have any suggestions on bi-wire speaker cables that are more discrete looking, but which sound excellent? A more flexible cable would be able advantageous as well. I really liked the sound of bi-wire MIT AVt1's with this Arcam/ProAc setup, but again, those boxes will be out of place in my office. Similarly, I have Cardas Neutral Reference at home, and I love the sound (and looks, for a home cable), but anything that thick is going to look odd coming out of the back of the little ProAcs. The way my office is setup, you get a good profile view of the speakers. The Siltek's that were reviewed in the lastest TAS seem like they could be contenders. Does anyone have an opinion on them?

Thanks, TOm.