Treasury to unveil new $20 bill Tuesday:

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New bills to deviate from standard green with the introduction of “subtle background colors.” In some way, this is supposed to be an anti-counterfeit measure. Digital imaging has been such an enormous boon to counterfeiting that the last round of currency redesign during the ’90’s, widely rationalized as necessary for security, has failed to stem the tide at all. And one rare-currency trader and anti-counterfeiting expert is quoted in this article as saying that the new design won’t make any more of a difference. On a different note (sorry), the new bills are not supposed to create problems with the increasingly ubiquitous bill-acceptor machines, sources claim. CNN Money