The public can soon send mail colored with Colorado’s purple mountain majesties.
State of play: A new forever stamp will celebrate Colorado’s sesquicentennial, marking 150th years since the state entered the Union — 100 years after the United States’ founding.
Between the lines: The move birthed Colorado’s official nickname, the Centennial State, forever tying the state with the U.S.’s birthday, which will mark its own semiquincentennial — its 250th anniversary — in July…