I have received a workbook with a custom color palette.
Problem I experience and I do not know how to solve:
- I open this book (custom color palette)
- I open and old book (standard color palette) and the palette in this
workbook has changed to the one of the first book.

It does not matter the order I open the workbooks. It only happens to me.
Same workbooks are opened by another user and the result is that every
workbook keeps its color palette.

Can anybody help me please?
Colors are very important in my excel worksheets. They give me important
meaning.

Thanks for any idea or suggestion.
Kindest regards,
Raúl