Styling disabled checkbox inputs

One more of these and then I'll stop trying to turn this Questions section into my own personal CSS school... for at least a few weeks.

Is it possible to style checkboxes? Specifically I have a page using some checked and unchecked items; they're not intended to be editable by visitors, that's fine, but I think the 'disabled' selector is messing me up.

Here's the page (I'm trying to just make the 'checked' boxes stand out a bit more by giving them a coloured background. Here's what I've tried to no avail:

input[type="checkbox"]:disabled {
  background: #46adf9;
}