commemorating the release of The Avengers, similar to the previous promotion for Tron: Legacy. The monorail ran on the Magic Kingdom line and sometimes on the Resort line as the Epcot line loops through the park itself, since Disney is not able to feature specified Marvel characters inside its Florida parks due to Marvel Entertainment's license agreement with Universal Parks & Resorts that was in place prior to the purchase of Marvel in 2009. In March 2013, Monorail Black was given a similar conversion to promote the release of Iron Man 3. In April 2013, Monorail Teal was converted into a special scheme commemorating the release of Monsters University. In November 2015, Monorail Black was decorated in Star Wars designs commemorating the release of Star Wars: Episode VII - The Force Awakens. In February 2016, Monorail Orange was decorated in Zootopia designs and was named the Zootopia Monorail System to reflect the Zootopia Transit Authority, commemorating the release of Zootopia. In June 2018, Monorail Orange was decorated in Incredibles designs to promote the release of Incredibles 2. A year later, Monorail Yellow was decorated with Toy Story characters to promote Toy Story 4. In September 2021, Monorail Gold debuted with a wrap for the Walt Disney World 50th Anniversary. Refurbishment Beginning in 2019, all of the monorails were refurbished with new brakes, a new interior, and repainted exterior. Monorails Silver, Green and Black were the first to be refurbished between June and December 2019, and monorail Lime was the last in August 2022. The majority of monorails also had deltas added; it is unknown why this was done, since there are no Monorails that are similarly colored, other than Blue and Teal, and Green and Lime. In December 2022, Monorail Black was repainted with a red pinstripe outline, which it still retains with its new red deltas. A simpler list of dates is below: Monorail Silver: Returned on June 30, 2019, with black deltas. Monorail Green: Returned on October 2, 2019. Monorail Black: Returned on December 6, 2019, with red deltas. Monorail Peach: Returned July 14, 2020. Monorail Blue: Returned on October 29, 2020, with silver deltas. Monorail Red: Returned on February 12, 2021, with black deltas. Monorail Orange: Returned on May 17, 2021, with black deltas. Monorail Gold: Returned on August 15, 2021. Monorail Coral: Returned on October 21, 2021, with teal deltas. Monorail Yellow: Returned on December 15,