[LyX/master] Fix custom color preset in dialog

[Juergen Spitzmueller]

commit 9571e9ffaa65007f5c09ffddd711421b7bf16752
Author: Juergen Spitzmueller <spitz at lyx.org>
Date:   Mon Feb 23 13:44:53 2026 +0100

    Fix custom color preset in dialog
---
 src/frontends/qt/GuiDocument.cpp | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/src/frontends/qt/GuiDocument.cpp b/src/frontends/qt/GuiDocument.cpp
index 4d228796d7..c4dcc782e2 100644
--- a/src/frontends/qt/GuiDocument.cpp
+++ b/src/frontends/qt/GuiDocument.cpp
@@ -5763,8 +5763,7 @@ void GuiDocument::toggleCustomColor(QTreeWidgetItem * item, int)
 	if (sel_color.isEmpty())
 		return;
 
-	docstring current_index = qstring_to_ucs4(sel_color);
-	QColor const initial(item->text(1));
+	QColor const initial(custom_colors_[sel_color]);
 	QColor ncol = GuiDialog::getColor(initial, this);
 	if (!ncol.isValid())
 		return;