Some mobile browsers allow you to customize the color of the address bar to match your site’s color. Add the code below to your theme’s functions.php file, and change #000000 to your color of choice.
/**
* Change Color of Mobile Address Bar
* @link https://www.billerickson.net/code/mobile-address-bar-color
*/
function be_mobile_address_bar_color() {
echo '<meta name="theme-color" content="#000000" />';
}
add_action( 'wp_head', 'be_mobile_address_bar_color' )