It marks the tenth anniversary of the Red Hot Organization (RHO), an international organization which uses mass media as a fundraising tool for its efforts at increasing public AIDS awareness.

In conjunction with the release of Indigo, Amazon.com hosted an RHO Benefit Auction, which ran from February 28 to April 11, 2001.

The event featured rare RHO memorabilia and the work of Rolling Stone photographer Mark Seliger.

Items auctioned at the event include signed proofs of Seliger's work, along with fifty autographed copies of his book and exhibition entitled "Physiognomy: The Mark Seliger Photographs."

The books were created exclusively for the RHO, and each contained a unique set of celebrity signatures.