Excel offers several customization options to modify the appearance of your worksheets, making them more visually appealing and easier to work with. Here's how you can change background color, gridlines, and other visual elements:

Background Color:

1. Select the worksheet(s): Click on the sheet tab of the worksheet you want to modify. To change the background color for multiple sheets, hold down the "Ctrl" key and click on the tabs of the desired worksheets.
2. Go to Page Layout: Navigate to the "Page Layout" tab on the Excel ribbon.
3. Background: In the "Theme" group, locate the "Background" dropdown menu. Click the arrow to reveal a color palette.
4. Choose a color: Select a pre-defined color from the palette, or click "More Colors" for a wider range of options. You can choose a solid color, gradient, or pattern fill.
5. Apply the change: Once you've chosen your desired color, it will be applied to the background of your selected worksheet(s).

Gridlines:

By default, Excel displays gridlines to separate cells visually. You can choose to show or hide them, and even customize their appearance.

1. Go to View: Click on the "View" tab on the ribbon.
2. Show or Hide Gridlines: In the "Show" group, find the checkbox for "Gridlines." Unchecked means hidden, checked means visible.

Customize Gridlines (Optional):

1. Click the arrow next to "Gridlines": This reveals additional options for gridlines.
2. View: Here, you can choose to show gridlines on the screen only, when printed, or both.
3. Color: Select a different color for the gridlines if desired.
4. Line style: Choose a solid line or a dotted line for the gridlines.

Other Customization Options:

Beyond background color and gridlines, Excel offers various formatting options to personalize your worksheets:

* Cell Borders: You can format individual cells or a range of cells to have borders (lines) around them.
* Font and Fill Color: Change the font style, size, and color of text within your cells. You can also apply fill color to specific cells for emphasis.
* Alignment: Align text within cells to the left, right, or center.
* Number Formatting: Define how numeric values are displayed (e.g., number of decimal places, currency symbols).

By exploring these options within the "Home" and "Page Layout" tabs, you can create worksheets that are tailored to your needs and preferences.