http://www.sci-news.com/paleontology/dinosaur-carotenoid-coloration-10354.html
Non-avian dinosaurs may have had bright color on their skin, scales and beaks in a manner similar to modern birds, according to a paper published in the journal Evolution.
http://cdn.sci-news.com/images/2021/12/image_10354-Orange-Dinosaurs.jpg
Link to article:
Estimating the distribution of carotenoid coloration in skin and integumentary structures of birds and extinct dinosaurs
[paywalled, sadly]
My Uni does not have access- I'd love to read this one if someone has a copy-