Using a 'Content Module' as a banner
If you do not want to add an image banner to a page, another option is to add two 'Content Modules' to the page, and set the first one to have a grey background. This way, the page has a banner and introduction text on grey that stands out...
...with the rest of the page body underneath on a white background.
We have used this on all pages across the website, including on pages that include an image banner. It helps the page title, and short description, really stand out!
We like it :-)