What is the method to change the color of table cells when hovered over?

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The method to change the color of table cells when hovered over is by using CSS hover selectors. Here's an example code:

table td:hover { background-color: yellow; }

This CSS rule will change the background color of table cells (td) to yellow when the user hovers over them. You can replace "yellow" with any color code or name that you want to use.