Selenium does not provide the built-in methods to highlight WebElements on the web page. However, we can overcome and highlight any WebElement using JavascriptExecutor.

Code Snippet to highlight element with border:

We can set any color to highlight the element with border sizes like 2px, and 5px and pass the values in JavascriptExecutor parameters.

js.executeScript("arguments[0].style.border='2px solid black'", element);

js.executeScript("arguments[0].style.border='4px solid green'", element);

Code Snippet to highlight element with background:

We can set any color to highlight the element with a background color like red, blue, or yellow and pass the values in JavascriptExecutor parameters.

js.executeScript("arguments[0].style.background='LightGreen'", element);

js.executeScript("arguments[0].style.background='yellow'", element);

Java Example Code for Highlight WebElements using JavascriptExecutor

package TestAutomationCentral;

import org.openqa.selenium.By;
import org.openqa.selenium.JavascriptExecutor;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.chrome.ChromeDriver;

public class HighlightElement {
    public static void main(String[] args) {
        //TestAutomationCentral.com
        System.setProperty("webdriver.chrome.driver", "C:\\temp\\drivers\\chromedriver.exe");
        WebDriver driver = new ChromeDriver();
        driver.get("https://www.google.com/");

        WebElement element = driver.findElement(By.name("q"));

        JavascriptExecutor js = (JavascriptExecutor) driver;
        //you can change the px and color accordingly for border
        js.executeScript("arguments[0].style.border='2px solid black'", element);
        //you can change color for background
        js.executeScript("arguments[0].style.background='LightGreen'", element);

    }
}