From 2d7491adae7b6a07faee77003c1a7d6e8be44b2b Mon Sep 17 00:00:00 2001
From: Julien Cabieces <julien.cabieces@oslandia.com>
Date: Mon, 19 Aug 2024 17:28:41 +0200
Subject: [PATCH] fix(ProjectColors): Set default color

according to project color model.
Fixes #58323
---
 src/app/qgsprojectproperties.cpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/app/qgsprojectproperties.cpp b/src/app/qgsprojectproperties.cpp
index f34d79b46d18..06d8509a0e6a 100644
--- a/src/app/qgsprojectproperties.cpp
+++ b/src/app/qgsprojectproperties.cpp
@@ -2621,7 +2621,11 @@ void QgsProjectProperties::setCurrentEllipsoid( const QString &ellipsoidAcronym
 
 void QgsProjectProperties::mButtonAddColor_clicked()
 {
-  QColor newColor = QgsColorDialog::getColor( QColor(), this->parentWidget(), tr( "Select Color" ), true );
+  const Qgis::ColorModel colorModel = mColorModel->currentData().value<Qgis::ColorModel>();
+  const QColor defaultColor = colorModel == Qgis::ColorModel::Cmyk ?
+                              QColor::fromCmykF( 0., 1., 1., 0. ) : QColor::fromRgbF( 1., 0., 0. );
+
+  QColor newColor = QgsColorDialog::getColor( defaultColor, this->parentWidget(), tr( "Select Color" ), true );
   if ( !newColor.isValid() )
   {
     return;