As a shop manager you may want to see the WooCommerce order status in different colors on the orders page.
This is how to change the color of the Order Completed Status in WooCommerce. You need to either add the following snippet to your (child) theme's functions.php file or in a system plugin in /mu-plugins/ folder. Create the folder if it doesn't exist yet.
It is important to use !important after defining the styles because WooCommerce styles would take precedence.
The example below allows you to change the font color and the background color of the status. If you want just one or the other you can either put the line in a multi line comments /* */ or just delete it.
<?php
add_action('admin_head', 'orbisius_tutorial_7459_render_styles');
/**
* This will override the Completed Order Status in WooCommerce - Orders
* @return void
* @see https://orbisius.com/7459
*/
function orbisius_tutorial_7459_render_styles() {
?>
<style>
.order-status.status-completed {
color: #fff !important;
background: red !important;
}
</style>
<?php
}