One of the great qualities of LibreOffice is that you can use several colour palettes for specific uses, graphic charters for example. This spreadsheets allows to make them very easily, to save them in you LibreOffice profile and to share them if necessary.
Developed by Jean-François Nifenecker, PaletteMaker is a macro for LibreOffice Calc very easy to use. It exists in English and in French, any other translation is welcome, the files has been made in this purpose.
To use it, you need to activate the macro at the request of LibreOffice (you may need to modify security options: Tools > Options > Security).
The spreadsheets generate a .soc file, that is the format of LibreOffice palette and ask (...)