I agree with the obsession to make things look neat and symetric. In that respect I can only recommend the [Simple Black Dress] FTW!
It is not like you are going to miss the stats of the chest piece that much in the low levels, certainly not while multiboxing.
I have mine enchnated with +100hp and they do not bind, so can be recycled for other lowbies =]

http://www.wowhead.com/?item=10053

Attachment 7