For some reason I was scratching my head on this and even asked this of the Telligent Tip Master.

I guess this is partly due to the fact that I am still learning my way around Graffiti and mostly to do with the fact that I am more of a hacker then a dev. This is how easy it is to do and I hope it helps someone because I really love this theme!

1. Navigate to \wwwroot\files\themes\Skittlish\ and open up the app.js file.
2. Locate line 75 in the app.js file (in bold) change it to one of the other predefined colors for example I changed mine to cookie = 'fixed blue' I found the color names in the base.css file in the same folder. The choices are blue, cyan, green, orange, pink, red and violet.

/* el customizer */
function loadPreferences() {
  var cookie = getCookie('skittlish');
  if (cookie == '') {
   cookie = 'fixed orange';
  }

I also want to point out that this could all be done using just the site itself no FTP required. Just go to the ControlPanel -> Site Options -> Utilities -> File Browser then navigate to the path above and click on the app.js this will open up another page with an Edit button.