We can add preprocess function for regions such that we can add customization before rendering the region template file(.tpl.php).
Drupal 7 – Check if the current loading page is the node view page of a specific content type

Sometimes we may even want edit the template file(.tpl.php) for specific content such as a content type node view. In Omega theme, there are different regions and by default they will use the following template files.

<drupal>/sites/all/themes/omega/omega/templates

• region--branding.tpl.php
• region--content.tpl.php
• region--menu.tpl.php
• region--sidebar_first.tpl.php
• region--sidebar_second.tpl.php
• region.tpl.php

Continue reading Drupal 7 – Customize region template file for specific content type →