A similar design with six stars was in use from 1965 for the flag of the Trust Territory of the Pacific Islands. Kosrae was then part of Pohnpei so both were represented by one star. The three extra stars representing Palau, the Marshall Islands and Northern Mariana, which chose not to participate in the Federation. The flag, adopted in 1978, is in the colors of the UN flag. The light blue also represents the Pacific Ocean. In an echo of U.S. heraldic practice, the stars represent the entities that make up the state, in this case, the four islands, arranged like the points of the compass.