Why is my page all black with dark grey text?
You probably have Bartik set as your active theme. This has a dark background to the page. To change this, set Acquia Cohesion minimal as your default theme.
You've not set the Acquia Cohesion minimal theme as the default, so your website is still showing styles from Bartik (Drupal default theme).
Navigate to 'Appearance' and click 'Set as default' next to Acquia Cohesion minimal theme.
