The small town of Plains, Montana, is showing up big when it comes to celebrating America's 250th birthday. Artists have painted the town red, white, and blue, and their canvases? Fire hydrants."It's bringing out the patriotism in everybody all around the town, and it's kind of the buzz," Plains resident Scott Johnson shared with MTN. America 250: Painting the Town Red, White, and BlueGiving the fire hydrants a fresh coat of Americana is the bra…