Modify body background color without DocProps plugin

I am using a jquery color picker plugin to select a color and then am using setData to set the body tag's background-color. I have fullPage set to true and have the DocProps plugin included. This is working fine.

But if I remove the DocProps button, then setData no longer works to set the background-color in the body tag.

Is there an easy way for this to work and still remove the DocProps button?

thanks!