I like the subtle bit of trolling they did with the page color: DT had registered that shade of magenta as a trademark, made it a core part of their brand and generally was VERY vocal in public about "owning" that color. [1, 2]

Though more recently they seem to have lost that protection. [3]

So if that page now deliberately uses the "Telekom color" to call out their bad behavior, that's a statement on its own.

[1] https://adage.com/article/digital/t-mobile-says-it-owns-excl...

[2] https://www.exali.de/Info-Base/magenta-markenstreit (in German)

[3] https://chiever.nl/en/blog-en/t-mobile-loses-the-protection-...