Default cell background in Calc

Another way would be to modify the overall color settings:

1. Menu "Tools" -> "Options"
2. in options: "LibreOffice" -> "Application Colors"
3. modify the very first color property "General" -> "Document background":

This will affect every document including writer and draw; it will affect every document independent from its source (assume working with a spreadsheet created by other people); and it won't affect other users working with your document (since it isn't a document / cell property but a user-specific application property). Of course, setting the cell background color manually or by using styles will override the general document background.

One way is to change the default template:

• Create a new blank document
• Press F11 to open the Styles editor
• Find the Default style and right-click then choose Modify...
• Set Background Color as desired
• Click OK
• Click File->Templates->Save as Template...

• Choose a name, e.g. Default

  

• Set the Template Category to My Templates
• Tick Set as default template
• Click Save

Now when you create a new Calc document it will use the template you just created.