Canonical's development and design teams responsible for the visual style and desktop in Ubuntu, enable a new theme in Ubuntu 20.04 by default that will continue the development of the current theme offered since Ubuntu 18.10. If two design options are available in the current version of Yaru - dark (dark headings, dark background and dark controls) and light (dark headings, light background and light controls), then a third, completely light option will appear in the new theme. Of the color changes, there is also an intention to replace the green background of the switch elements with an eggplant color.
Experiments are also underway to include new directory icons that can be associated with Ubuntu and that will have the proper contrast when displayed on a light and dark background.
In addition, users will be offered an updated interface for changing theme options. In the future, this interface is planned to be expanded with the ability to selectively change the theme for individual elements, for example, it will be possible to change only the design of the top bar or pop-up notifications. To change the theme on the fly, without logging out, GNOME Shell plans to implement the necessary changes.
When preparing a new theme, the task is to maintain brand awareness, but at the same time simplify the verification of the correct rendering of third-party applications with this theme. To organize testing without running Ubuntu in a separate virtual machine, the Yaru theme is already offered in Flatpak format for testing in and in the AUR repository . In the new theme, it is planned to continue work on bringing Yaru closer to the standard GNOME theme (Adwaita). To track discrepancies based on GitHub Actions, a handler has been implemented that automatically broadcasts all changes to Adwaita in the form of pull requests sent to the Yaru repository.
Meanwhile, the GNOME developers demonstration of a prototype of the updated GNOME Shell skin planned for the GNOME 3.36 release. In addition to the general , visual changes are most noticeable in the calendar / notification area (shadows appeared) and search (Search Overview, background and grouping of results changed). Icon rendering has been accelerated and unnecessary redraws have been eliminated.
Source: opennet.ru