In Google Sheets, as in other spreadsheet programs, you can set the formatting of a cell (text color, background color) based on the data contained within that cell. This is called "conditional ...

Build a consistent visual system in Excel using cell styles, including customization, global updates, and workbook-wide reuse ...

If you are trying to write a number in Excel or Google Sheets that starts with zero (0), you may not do that due to the default settings. In that case, you should follow this tutorial to enter zero ...