Question: Was the 1965 National Football League Championship Game played at an outdoor stadium or indoor stadium?

Context paragraphs:
1938 NFL Championship Game: The 1938 National Football League Championship Game was the sixth championship game played in the National Football League (NFL).  It was played on December 11 at the Polo Grounds in New York City, with an attendance of 48,120, a record crowd for a title game.

Norris-Penrose Event Center: The Norris-Penrose Event Center is a multi-purpose facility in Colorado Springs, Colorado, located at the base of Pikes Peak.  It is home to the Pikes Peak or Bust Rodeo.  It consists of an outdoor stadium, built in 1938 by Spencer Penrose, rancher and capitalist Jasper Ackerman, and mining partner Charles Leaming Tutt.  The stadium was named after Penrose following his death.  The stadium seats up to 10,000 spectators and hosted a football game between the Los Angeles Bulldogs and the Pittsburgh Pirates.  With five horse barns, an indoor arena built in 1986, and seating up to 500 spectators, the stadium was home to the Colorado Candoos of the National Indoor Football League.

List of NFL Championship Game broadcasters: The following is a list of the television networks and announcers that broadcast the National Football League Championship Game from the 1940s until the 1969 NFL season (after which the NFL merged with the American Football League).  The National Football League first held a championship game in 1933, it took until 1948 before a championship game would be televised.  The successor to the NFL Championship Game is the NFC Championship Game.

Lambeau Field: Lambeau Field is an outdoor athletic stadium in the north central United States, located in Green Bay, Wisconsin.  The home field of the Green Bay Packers of the National Football League (NFL), it opened in 1957 as City Stadium, replacing the original City Stadium at East High School as the Packers' home field.  Informally known as New City Stadium for its first eight seasons, it was renamed in August 1965 in memory of Packers founder, player, and long-time head coach, Curly Lambeau, who had died two months earlier.

2011 UFL Championship Game: The 2011 UFL Championship Game was the third championship game of the United Football League and took place on October 21, 2011, the concluding weekend of the league's truncated third season.  The game was won by the Virginia Destroyers, who, in front of a standing-room-only home crowd at Virginia Beach Sportsplex, defeated the two-time defending champion Las Vegas Locomotives 17–3, spurred by the performance of strong safety and game MVP Aaron Rouse.  The win gave Destroyers coach Marty Schottenheimer, notorious for his failure to reach the Super Bowl in his NFL coaching career despite strong regular season statistics, his first championship as a professional head coach and his first professional championship since the 1965 American Football League Championship Game, Schottenheimer's rookie season as a player.

2014 Heritage Classic: The 2014 NHL Heritage Classic was an outdoor regular season National Hockey League (NHL) game held indoor, part of the Heritage Classic series of outdoor NHL ice hockey games in Canada.  It took place on March 2, 2014, in BC Place in Vancouver, with the Ottawa Senators facing off against the home team Canucks.  It is the first "outdoor" game to be played in what technically is an indoor stadium, albeit one of a larger capacity than a typical NHL arena; BC Place is a retractable roof venue, and it is unknown if the stadium has the capabilities to keep its roof open during inclement weather (several stadiums of the type explicitly cannot be kept open in such an environment due to drainage concerns).  The game was televised nationally in Canada on CBC and nationally in the United States on NBCSN.

1945 NFL Championship Game: The 1945 National Football League Championship Game was the 13th National Football League (NFL) championship game.  The Cleveland Rams defeated the Washington Redskins, 15–14, at Cleveland Stadium in Cleveland, Ohio, on December 16.

1968 NFL Championship Game: The 1968 National Football League championship game was the 36th annual championship game.  The winner of the game represented the NFL in the third AFL-NFL World Championship Game also called the Super Bowl.  The NFL title game was held December 29 at Cleveland Municipal Stadium in Cleveland, Ohio.

1939 NFL Championship Game: The 1939 National Football League Championship Game was the seventh league championship game of the National Football League (NFL), held on December 10 at Wisconsin State Fair Park in West Allis, Wisconsin, a suburb west of Milwaukee.

1965 NFL Championship Game: The 1965 National Football League Championship Game was the 33rd championship game for the National Football League (NFL), played on January 2, 1966, at Lambeau Field in Green Bay, Wisconsin.  This was the first NFL championship game played in January, televised in color, and the last one played before the Super Bowl era.

Supporting paragraphs: 1965 NFL Championship Game Lambeau Field
Answer: outdoor