Change theme color for Telegram Web
This extension allows you to change the color theme for web.telegram.org/a/ (so far only for the A (Z) version and only for dark mode). You can easily change the color of sent messages, links, indicators and more.
It is also possible to make a smooth automatic color change, this is called the rainbow mode.
Source code: https://github.com/naztar0/TelegramWebColorThemesExtension