If a cell is copied to clipboard, then format that cell?

Hello,
Could you please give some advise: Monthly, I have to copy some cells from excel to another document. In this copy process I want to know what cells I copied by marking them with a specific format (to avoid tangle). Is there any possibility to make something like: If cell copied to clipboard (or if Ctrl+C applied on that cell), then the cell gets such format (fill color chage)?

Thank you for your support.