After diazo approach introduction to the Plone theming world we decided to restructure all our free themes: now they are dependent on plone.app.theming package.
The following are feature list for most popular Quintagroup free themes:
SunRain Plone Theme (quintagroup.theme.sunrain)
- Two different views: Rain and Sun
- Replaceable header image for the whole site and site sections
- Subscribe viewlet with 4 editable actions: share on Twitter & Facebook, Send this and Subscribe to RSS
- Customizable site slogan on the header area
- Blogging support (requires Products.Quills or blog.star product)
- Styles for portlet culumus (tag cloud portlet)
- 2 portlet styles for static stylish portlet: Green Item and Grey Item and special styling for links in such portlets

Schools Plone Theme (quintagroup.theme.schools)
- Styles for front page image carousel (works with Products.Carousel)
- Replaceable header image for the whole site or site sections
- Right top area reserved for the first portlet from the right column
- Customizable top area height
- Configurable columns width
- Editable color of links, links hover, and visited links

WhiteBlack Theme (quintagroup.theme.whiteblack)
- Replaceable header image for the whole site or site sections
- Configurable columns width
- Header area height depend on number of site actions
- Global navigation located above the content area between portlet columns

Other Free Plone Themes
There are also TechLight, Lite and EstateLite free diazo Plone themes that are ready-to-be-used on your Plone 4.1 site.
All our themes use Plone 4 logo that is customizable as in default Plone via ZMI portal_skins/sunburst_images/logo.png. Themes' footer is also editable as in default Plone: via portal_view_customizations/plone.footer.
We also included improved thumbnail display view (switch to Thumbnail view for this) for all themes.
All themes were tested with such popular Plone products as: Products.Carousel, Products.ContentWellPortlets, Products.LinguaPlone, and quintagroup.dropdownmenu. We added special styles to make our themes look nice with these products activated.
Theme Installation
Themes can be installed into buildout via adding theme name into eggs section of buildout.cfg file, rerunning the buildout and restarting instance. Then activate theme via Site Setup -> Add-ons and enjoy!
Please, feel free to contact us any time with any feedback or improvement suggestion. Thank you for using our products.