Is it possible to have a different background color every time you refresh?

I'm using the Avenue template and have a flat color as the background of my site, I just want to know if it's possible to have a different color every time the site is refreshed? Not as in random colors on the wheel but like if I choose 5 or 10 specific colors that can just be cycled through randomly? 

Thanks.
Billy

Try this: https://codepen.io/eksch/pen/wagdyZ

or

https://www.computerhope.com/javascript/random-color.htm