Re-formed and OverDyed Rugs

How do you feel about the overdyed and re-formed area rug trend? We like most of the looks out there, from the high-end to the more accessible Cost Plus versions. We're undecided about the patchwork approach, or the overly-pale dyes - we like lots of color. Which tends to obscure the underlying design (how do they get the white parts of the design to stay white?) There's a nice overview of this process over at Design Hole with links to retailers and how-tos.
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