The individual freedom to contract, enshrined in the US and Colorado Constitutions and known as the Contract Clause, can add another case to its storied history – specialty license plates. In 2000, the Raptor Education Foundation contracted with the Department of Revenue for the exclusive right to buy a specialty plate. In 2002, the Department was court-ordered to sell the plates only to members of the REF. In 2009, the Legislature amended the law (CRS 42-3-208) to allow non-REF members to buy the plates. The REF sued. The court of appeals, after finding that the constitutional challenge could be addressed even though it was not raised in a pleading, struck down the legislation as unconstitutional. The law violated the Contracts Clause because it was not directed at a general social problem and was an unforeseeable substantial impairment to the existing contractual relationship.