Bug 509881

Summary:	Metabug: QColorDialog no longer remembers custom colors globally, so each implementation needs to do it manually
Product:	[I don't know] kde	Reporter:	Nate Graham <nate>
Component:	general	Assignee:	Unassigned bugs <unassigned-bugs-null>
Status:	REPORTED ---
Severity:	task	CC:	kdedev
Priority:	NOR
Version First Reported In:	unspecified
Target Milestone:	---
Platform:	Other
OS:	Linux
URL:	https://codereview.qt-project.org/c/qt/qtbase/+/626629
Latest Commit:		Version Fixed In:
Sentry Crash Report:
Bug Depends on:	502957, 509709, 509811
Bug Blocks:

Description Nate Graham 2025-09-24 18:41:48 UTC

https://codereview.qt-project.org/c/qt/qtbase/+/626629 changed QColorDialog to stop saving and loading custom colors globally. As a result, KDE is now receiving bug reports from all quarters about custom colors no longer being saved.

Assuming this behavior won't be reverted, we need to write some code to save and restore custom colors.

Options I can see:
1. Restore the former behavior by making a wrapper around QColorDialog in plasma-integration that saves and restores custom colors globally, so no changes are required in KDE apps.
2. Make C++ and QML wrappers around QColorDialog that does all of this automatically on behalf of the calling app, and then port all apps to use it.
3. Leave it up to each individual app to handle it.