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Formatting Issues

How to Change the Color of Existing Borders in Excel for Mac

Partner EditorPartner Editor Oct 10, 2026 869 views

Question details

The user needs to change the color of cell borders that have already been applied in Excel for Mac, but finds that changing the color setting alone does not update the previously drawn borders.

How to Change the Color of Existing Borders in Excel for Mac
Product
Microsoft Excel
Device & OS
Mac
Scenario
Updating the style and color of existing cell borders in a worksheet.
Observed behavior
Changing the border color in the Format Cells menu only affects newly added borders unless the specific existing border sides are manually re-selected in the preview diagram.
Before you start

Ensure you have selected the exact range of cells containing the borders you want to modify before opening the Format Cells dialog.

Solution 1Recommended

Update Existing Border Colors via the Format Cells Dialog

Use the border preview diagram in the Format Cells menu to re-apply the new color to existing borders.

In Excel, selecting a new border color only readies the system to draw new borders with that color. To update existing borders, you must explicitly tell Excel which lines should receive the newly selected color.

1
Select the target cells

Highlight the cell or range of cells in your worksheet that have the existing borders you want to change.

2
Open Format Cells

Right-click the selected cells and choose "Format Cells" from the context menu, or press Cmd + 1 on your Mac keyboard.

3
Navigate to the Border tab

In the Format Cells dialog box, click on the "Border" tab to view the current border settings for your selected cells.

4
Choose a new color and style

Select your desired color from the "Color" dropdown menu and pick a line style from the "Style" box.

5
Apply to existing borders

In the preview diagram, click on the specific border lines you want to change, or use the Preset and border location buttons around the preview. You must click them after selecting the new color.

6
Save changes

Click "OK" to apply the updated border colors to your selected cells.

Update Existing Border Colors via the Format Cells Dialog
Order of Operations: You must select the new color first, and then click the border lines in the preview diagram. Changing the color dropdown alone will not update borders that are already applied.
Advanced Spreadsheet Formatting

Easily Format Cell Borders with WPS Spreadsheet

WPS Office Spreadsheet provides an intuitive Format Cells interface highly compatible with Excel, allowing you to easily customize, change, and update cell border colors on Mac without hassle.

  1. 1. Select Cells: Highlight the cells containing the borders you wish to modify in WPS Spreadsheet.
  2. 2. Access Format Cells: Right-click and choose "Format Cells", or use the Cmd + 1 keyboard shortcut.
  3. 3. Update Borders: Go to the "Borders" tab, select your new color, and click the specific borders in the preview diagram to apply the change before clicking "OK".
Highly compatible with Microsoft Excel (.xlsx, .xls) file formats.Intuitive border preview diagram for exact visual customization.Free, lightweight, and fast-loading Mac application.
microsoft office alternative - wps office

Frequently Asked Questions

Why didn't my border color change after I selected a new color in the dropdown?

In Excel, selecting a new color from the dropdown only sets the active color for borders you are about to draw. To apply this new color to existing borders, you must click the specific border lines in the preview diagram within the Format Cells dialog after selecting the color.

Can I change the border color of multiple non-adjacent cells at once on Mac?

Yes. Hold down the Command key while clicking to select multiple non-adjacent cells, then open the Format Cells dialog (Cmd + 1). Any border styles and colors you apply in the Border tab will affect all selected cells.

Is there a way to quickly remove all borders to start over?

Yes. Select the cells, go to the Home tab on the ribbon, click the Borders dropdown icon, and choose "No Border". Alternatively, in the Format Cells Border tab, you can click the "None" preset button and click OK.