An updated version of the Cardinal template is now installed on the Garden Image site. The text is darker, the background lighter and the links the right colour. Plus, the images can stay the same size.
Also changed the feed. Using a Joomla Jumbox, I tested the feed module and decided to go with that.
The site will continue to improve. Reading Letting Go of the Words: Writing Web Content that Works is a great help. It should be required reading.