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Twitter Blue test run is reportedly here and costs $3 a month

The subscription service comes with customizable color themes and app icons, according to tipster Jane Manchun Wong.

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Twitter Blue could soon roll out to the masses. 

Sarah Tew/CNET

Twitter has seemingly confirmed its Twitter Blue subscription service, which costs $3 a month, according to tipster Jane Manchun Wong. Wong posted screenshots to the social media site Thursday showing Twitter Blue appearing as an in-app purchase on the App Store. 

"For testing, I've become the first paying Twitter Blue customer," Wong noted.

She says the service comes with color themes and custom app icons, and that a Reader Mode, which converts threads into easy-to-read text, is coming soon.

Twitter declined to comment. 

Wong has previously said Twitter Blue could have a tiered pricing model, with users who pay more getting more features. One of those features is reportedly called Collections, which lets users save their favorite tweets in collections to make them easier to find. Another rumored feature called Undo Send would reportedly let users take back their tweets if they hit "Undo" fast enough after posting.