Thread:Extension talk:MobileFrontend/Why "read in another language" button changed its color randomly?/reply (3)

Ah, now i know, what you mean :)

The new button now follows the new mediawiki-ui design (see the styleguide for example: https://tools.wmflabs.org/styleguide/). The change was first longer time ago in alpha (Experimental) and beta mode of MobileFrontend and now changed into stable for all users.

The reason for this change is: UX standardization :) The goal is to provide a standardised user interface for desktop and mobile site with the needed customization (font size, action elements and so on), but the basic elements are the same.

Hope that answers your questions :)