After said compact becomes effective, the two Colorado members of the four-member Cumbres and Toltec scenic railroad commission shall be appointed by the governor and shall serve until revocation of their appointment by the governor, and, on behalf of the Cumbres and Toltec scenic railroad commission, the state of Colorado shall pay the necessary expenses and also compensation of said members in an amount which shall be fixed by the governor and when so fixed shall be changed only by action of the governor.