Simple Environment Indicator

The module works very much like Environment Indicator module (2nd version) with a minimal approach. It requires Drupal core's Toolbar or Admin menu (for Drupal 7 only) module and changes the color of the Toolbar as you like.

It is a simple module that does one thing; to color the Toolbar. It has no configurable user interface. All you need to do is place a line in settings.php such as,

// Drupal 7
$conf['simple_environment_indicator'] = 'DarkRed PRD';

// Drupal 8
$settings['simple_environment_indicator'] = 'DarkRed PRD';
// or
$settings['simple_environment_indicator'] = '@PRD';

First word in the string is the name (or hex value) of the color and the rest will show up in the far left of the Toolbar. If you use @ sign with environment name, predetermined color will be used.

Drupal 8 version supports anonymous users who don't normally have access to Toolbar.

$settings['simple_environment_anonymous'] = TRUE;