The clickbait headline absolutely ignores the following from the article itself:<p>> Don't confuse the term "trademark" with ownership of color though. Trademarking a color simply allows a company to use a particular combination and shade of color in its own industry.<p>> Target can't sue Coca-Cola for using a similar red, because they are not selling competing products.
I'd say this fits here: <a href="https://www.businessinsider.com/colors-that-are-trademarked-2012-9" rel="nofollow">https://www.businessinsider.com/colors-that-are-trademarked-...</a>
TLDR; Clickbait headline. This is a fairly common practice. T-Mobile has filed and enforces a color mark, a type of trademark, as do many other corporations, for a specific shade of pink known as RAL 4010.