Windows 11 legacy apps are set to receive the Mica title bar as
Microsoft prepares the operating system for more dark mode
Similar to acrylic from Fluent Design, Mica is an opaque and
dynamic material that can be applied to apps to paint the
background or title bar with the desktop theme. Mica and
Acrylic are supposed to co-exist. Microsoft Edge is a great
example of how Windows 11’s Mica effect and Fluent Design’s
acrylic can be used at the same time.
Apps like Settings and Microsoft To-Do already have Mica
effects on their title bar and even the background. Microsoft
is now extending it to legacy tools/apps, such as Run or Winver
(command to check the system’s build and version revision
Windows 11 Build 22557, Mica has just been introduced to
the title bar of nearly all legacy dialogs or apps.
Mica effect is no bad thing and it is believed to be faster
than the rest of the Fluent Design materials like Acrylic. For
some reason, the current implementation of Mica on legacy
dialog doesn’t really blur out the content behind the app and
it appears much more subtle than Mica on UWP apps.
Notably, this isn’t anything like the UI teased by Microsoft in
a YouTube video posted last month.
For those unaware,
Microsoft recently posted a screenshot of a new Windows Run
with a transparent Aero/Acrylic-like title bar. This unreleased
title bar change can be seen above.
As you can see in the above screenshot, the title bar design
update hinted during the YouTube stream is more transparent and
engaging, with a glassy effect. However, the new title bar
included in the latest preview update is different, with a less
interesting subtle touch of Microsoft’s Mica design.
Microsoft is exploring multiple design options for the title
According to reports, Microsoft is believed to be working on a
new “tabbed” version of the Mica material with a glass-like
effect with a blurred wallpaper.
Likewise, we’ve also spotted references to an experimental flag
“MicaBackdropInApplicationFrameHostTitlebar” in the preview
builds and it seems to suggest Microsoft might be willing to
settle for Mica effects.
At the moment, we don’t really know if Microsoft has finalized
Mica for legacy title bars over Acrylic or some other material.
The overall idea is to give a modern touch to the legacy areas
and enable dark mode for more apps, including Windows run.