So apparently a real cicus benefited from Paper Mario Color Splash giving them free advertising: "In a bizarre accidental case, in Paper Mario: Color Splash, the Emerald Circus troupe, at one point, requests Mario to follow them on social media. As it turns out, there is a real Emerald Circus out there, which got a burst of activity on their Facebook and Twitter pages. They embraced the coincidential identical name too, with a full playthrough of the Emerald Circus stage on their Facebook page. "
Tyrantrum: Complete restoration is impossible, allowing room for theories that its entire body was once covered in a feather-like coat.
Seems to reference theories that T Rexes (and other dinosaurs) may have had feathers.