I am relatively new to web design. So, I apologize if this is kind of a easy question.
Basically I want to add color over an image and use it as the background for a certain section of my website. Example: on the TemplateToaster homepage, there is an image of a desk with a purple cast over it.
Basically what I would like to do is to change the image that is in the background of this site for the section "a diverse range of building products". However I would like to keep the color that is cast over the image.