SharePoint HTML Editor Styles
Ever wanted to change the styles that exist in the HTML or content editor of SharePoint? It’s easy to do and you can probably find lots of references to how this can be done on the web, but just in case here is a link to the wonderful Microsoft Help and How to Article that describes the process: http://office.microsoft.com/en-us/sharepointdesigner/HA101741401033.aspx
Using this method you can create any number of your own styles. This is especially useful when you want to help your users stick to your company colors or for their rich html content to fit with the overall brand of your website.
Hope this helps someone,