The following methods let you change the Gridline color in an Excel worksheet on a Windows 11/10 PC: Excel Options Cell Borders Line Color Conditional Formatting VBA Let us see this in detail.

Borders help separate components in a document or on a chart. If you'd like to change your legend's border color to make it more noticeable, click the Format Legend's "Border" button and then ...

Return to Excel and start clicking cells. Each time you change the selection, you trigger the procedure, which changes the fill color of the active cell, temporarily.