Carson: custom one page color

Hi, 

I am having a hard time figuring out how to get a different color for just one page on my site. 

I am using Carson Template and the whole site is white, but wanted to change the color of just one page into black.  I don't know any coding and can't seem to find a solution that works through my searches.  Could be i am not searching within the correct parameters.  Any help would be appreciated.  

Just put the below into a code block on the page.

<style>
  .main-content {
  background-color: black!important;}
</style>