In this post we will discuss how we can change ribbon background color in SharePoint 2010. Also you can check my previous posts on:
We have to modify the s4-ribbonrow css class to change the background color of the ribbon. Basically we have to over write the above css class.
In the master page there will be a div with id with name as "s4-ribbonrow".
Once you deploy the css file then ribbon color will change.