ISO page code that highlights changes and resets every week

[mex1500]

Hello all, I am new to this forum and am trying to find a code i can put into my workbook that highlights changes every time the workbook is saved/updated. After a week, the previously highlighted changes are un-highlighted in order to minimize confusion. If a code that un-highlights every week cant be written, then just a code that highlights changes will work just fine. Thanks for any and all help!!

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Sample project attached ...