Change individual page colour background on Nueva

Site URL: http://wedgecollective.com

Hi there,

I'm using the Nueva template and I'm trying to have each page as a different colour background.

I've tried numerous pieces of CSS code and whilst I can change the colour of them, I can't seem to change them individually and for them to remain that way.

Another tactic I'm trying now is to basically add a banner image of the colour I would like the page to be, but I understand this isn't a great method.

Does anybody know the CSS code for individual colour pages that will work?

Or if I have to add a colour image as a banner, then I'm looking to remove an empty content box that just remains white above the footer. 

Thank you, 

Edit Page > Add Code Block > Paste this code

<style>
  .Main {
    background: red;
}
</style>