Alternate background colors for each article.....

Hi, I am using the One Page Template and all is going well except that I do have a question.

Each article on the Front page has a different background of eg white, then grey and then black as on the Contact page in the demo for the template.

How do you edit the backgrounds of these pages. It seems that they alternate in style on the Front Page depending on the order of the articles on the page....?

Hope you can help

Many Thanks

We think that are all the same ??

What do you mean?

That black contact is rapid contact module and it's placed inside module position located in row with class row-6, row-6 is defined as black