Mo. Rev. Stat. § 301.3163
Any person may apply for specialty personalized "Don't Tread on Me" motor vehicle license plates for any motor vehicle such person owns, either solely or jointly, other than an apportioned motor vehicle or a commercial motor vehicle licensed in excess of twenty-four thousand pounds gross weight. Such person shall make application for the specialty personalized license plates on a form provided by the director of revenue. The director shall then issue specialty personalized license plates bearing letters or numbers or a combination thereof as determined by the director, with the words "DON'T TREAD ON ME" centered on the bottom one-fourth of the plate, in bold, all capital letters, and with lettering identical to the lettering used for the word "MISSOURI" on the regular state license plate. Such words shall be no smaller than forty-eight point type. Such plates shall be tiger yellow beginning at the top and bottom, with the color fading into white in the center. All numbers and letters shall be black. The left side shall contain a reproduction of the "Gadsden Snake" in black and white, with the snake to be three inches in height and two inches wide, and sitting on green grass that is two and one-quarter inches wide. Upon payment of a fifteen dollar fee in addition to the regular registration fees, and presentation of any documents which may be required by law, the director of revenue shall issue to the vehicle owner a specialty personalized plate. Notwithstanding the provisions of section 301.144, no additional fee shall be charged for the personalization of license plates issued under this section. Such license plates shall be made with fully reflective material with a common color scheme and design, shall be clearly visible at night, and shall be aesthetically attractive, as prescribed by section 301.130.
§ 301.3163, RSMo