Callisto is a free WordPress Theme. The theme comes with four different flavors, namely; Blue, Red, Green and Gray. The blue color comes by default.

Callisto WordPress Theme is highly search engine optimized and Google Adsense optimized. Callisto has two widget ready columns/sidebars, Left and Right sidebars.

Features:

• 3 Columns 
• Web 2.0 Looks 
• Widgetized Sidebar 
• SEO Optimized 
• Dynamic background 
• Four unique colors (Red, Green, Blue, Gray) 
• Social Bookmarks Integration 
• Better Navigation 
• High Content Visibility 
• WordPress 2.7 Support

This theme is released under GPL.

Download Callisto WordPress Theme.