The Changes dialogue box specifies various options for highlighting recorded changes in documents.
To record changes to your work, choose Edit - Track Changes - Record.
Defines colours for recorded changes. If you select the "By author" entry, LibreOffice will automatically set the colour depending on the author who made the changes.
Specifies the colour for changes of cell contents.
Specifies the colour to highlight deletions in a document.
Specifies the colour to highlight insertions in a document.
Specifies the colour to highlight moved cell contents.