Custom number format in Excel lets you define the color of the text in selected cells according to their values. What's more, ...

To fix the “Excel file format and extension don’t match” error, first check if the file extension matches its format. Try renaming the file with the correct extension (e.g., .xlsx for Excel ...

Apply your custom theme to any Excel workbook, Word document or PowerPoint presentation. It will now be listed in the Custom category when you select "Themes" in any Microsoft Office 2007 Excel ...