Concerning the implementation of voter-approved changes to the Colorado constitution that make it more difficult to amend the state constitution, and, in connection therewith, prohibiting a petition for an initiated amendment to the state constitution from being submitted to voters unless the petition is signed by the constitutionally required number of registered electors who reside in each state senate district and total number of registered electors, requiring at least fifty-five percent of the votes cast on any amendment to the state constitution to adopt the amendment unless the amendment only repeals in whole or in part a provision of the state constitution, in which case requiring a majority of the votes cast on the amendment to adopt the amendment, and making an appropriation.