The colour palette on a workbook is different from the default colour
palette. Whenever this workbook is opened it overwrites the colour
palette on any other open workbooks. When I close the offending
workbook the new colour palette remains in the other workbooks.

I have tried to reset the colour palette on the offending workbook but
nothing happens. I try to import the default colour palette from
clean workbook and nothing happens.

This is only happening on one computer. When I open the offending
workbook on another computer the offending workbook does not impact
the colour palettes of other open workbooks which is what is to be
expected.

I tried to google this problem without luck.

Does anyone know how to fix this ?

thanks

Jigger