Changing the icon of the "Peek at Desktop" widget within KDE

Brainstorm
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The “Peek at Desktop” widget’s configuration dialog only offers a keyboard shortcut option — there’s no way to change the icon (at least in Plasma 6.6.3 on Fedora 43 KDE). Other widgets like the Application Launcher have an icon picker, but this one doesn’t seem to.

Is there a reason for that, or is this just something that hasn’t been implemented yet? I’d love to be able to swap it out for a different icon.

(As a small aside: with the Breeze theme, the icon personally reminds me a bit of an empty battery — which is what sent me looking for a way to change it in the first place.)

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I used to change that monochrome icon with the regular color user-desktop icon, because I prefer placing it to a Unity-style vertical left panel (dock) including the Icons-Only Task Manager with 48px color app icons, but unfortunately it’s no longer possible.
This system-wide plasmoid is at /usr/share/plasma/plasmoids/org.kde.plasma.minimizeall, but it no longer has those various QML files that users could at least use them as a backdoor to make such customization.
The developers seem to have decided to prevent users tweaking it, which I think is not quite consistent with the general KDE Plasma philosophy of giving much more power, flexibility and customizability to users than GNOME does.
Probably they have some good reasons for this change, but I hope they add the functionality to change the default icon as in some other plasmoids.

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No, this is purely a consequence of having QML files be compiled to C++, making everything faster.

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Why not just use a different icon theme?

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Thanks for the clarification.
IMHO, it would be better to leave such small plasmoids (e.g. trash and minimizeall) out of this at least until some configuration options (e.g. changing its icon) are provided via GUI.

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Users editing QML files directly was never actually intended or supported. This was a side effect of something else too…

Quite possibly nobody implemented this feature because it was hackable like this. Now maybe someone could.

There’s two ways to solve this: by switching the theme to something else, or by adding an icon toggle in the plasmoid settings. The latter can be done in applets · master · Plasma / Plasma Desktop · GitLab, in minimizeall and showdesktop.

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