Aluminum Wheel repair

Hi,
I bought a set of aluminum wheels on ebay this week and would like to repair a chunk that was taken out of one of them. Does anyone know of any good aluminum repair/filler that doesn't require welding or a blow torch? I was hoping to get something like JB Weld that goes on cold but that I don't have to paint to match the aluminum color. Thanks!
Matt

Doesn't JB Weld have several products? I vaguely recall seeing (or maybe I want to recall seeing) one in Auto Zone that was aluminum colored out of the tube.

If it at all looks like it weaken it I would not use it. Alloy rims should never be welded.
I hope you are only talking about a tiny piece for cosmetics reasons only!

Thanks guys,
Yeah, this is only for cosmetic purposes. There is a chunk missing from one of the edges toward the middle of the wheel. The wheel is still structurally sound.
Matt