JoomlaXTC delivered Planate with brilliant sephia shades. The used XTC Framework is powered by Bootstrap as well as CSS3 comes with modern web technologies, which are native to much third partie solutions for Joomla. You can use Planate with K2, Komento or AcyMailing. Planate is native to Joomla 2.5 and Joomla 3.x. The download is commercial. You can use it best for blog or personal websites. 

ZT Happy is ready for K2 and native to Joomla 2.5. You can use this template best for magazine-, blog- and personal websites. ZOOTemplate deliver this template with widescreen image slideshow, mega menu and RTL language support.

Themes Hunt WorldAID template is ready for Joomla 2.5 or Joomla 3.x and comes with HTML5/CSS 3 based source code. You can use this template for business- as well as personal websites. A fine feature is the intergrate Ajax search module. The K2 support allows you to create also blogs with this template. WorldAID works well with desktops and mobiles, by the of Bootstrap. You can download this template on the website of ASTemplates.