Actually, I don't even know how to really remove a custom format cell setting manually.
Example: let's say I've set a blue background colour. I can re-change it to white ... BUT: that overrides my "Stripes every 1 Rows" setting: the dimension gets coloured white and the stripes don't work anymore.
How can I remove the setting? (of course, deleting the existing object and creating a new one instead is always an option ... but having some complex straight table charts that becomes annoying )