There are two main ways to change the page color in Adobe InDesign. You can either create a rectangle frame that covers the entire page and fill it with the desired color, or you can redefine the [Paper] color in the Swatches panel.

Method 1: Create a Rectangle Frame

1. Open your InDesign document.
2. Select the Rectangle Tool (M) from the toolbar.
3. Click and drag to draw a rectangle frame that covers the entire page.
4. Fill the rectangle frame with the desired color.
5. Send the rectangle frame to the back by right-clicking on it and selecting Send to Back.

Method 2: Redefine the [Paper] Color

1. Open the Swatches panel (Window > Swatches).
2. Double-click on the [Paper] swatch.
3. Select the desired color from the Color Picker.
4. Click OK.

Additional Tips

• If you want to apply a different color to specific pages in your document, you can create a master page with the desired color and apply it to those pages.
• If you want to use a pattern or gradient as your page color, you can create a swatch for the pattern or gradient and then apply it to the rectangle frame or the [Paper] color.
• If you are printing your document, you will need to make sure that your printer is capable of printing the desired color.

I hope this helps!