https://lxr.kde.org/source/rolisteam/rolisteam/src/libraries/core/src/undoCmd/changecoloritem.cpp?v=stable-kf6-qt6
/stable-kf6-qt6/rolisteam/rolisteam/src/libraries/core/src/undoCmd/changecoloritem.cpp
KDE Source Cross Reference
stablesrclibrariescorecpp