"[4] In 2014, Colley was cast as the voice of Pig Robinson in the Nick Jr. Channel animated television show Peter Rabbit.
[5][6] Colley played the lead role in You're a Good Man, Charlie Brown at the York Theater Company from May 24, 2016, to June 26, 2016.
Colley played the role of Flounder, alongside Sara Bareilles, Tituss Burgess, John Stamos, and Rebel Wilson in the first week of June 2016.
[9] In 2021, he joined the cast of Hulu's Sex Appeal as well as American comedy film Senior Year.
[13] In a 2022 ABC News primetime documentary special about the LGBTQ+ experience, Colley spoke publicly for the first time about his sexuality; he said "I am still learning who I am and what I like.