Styling Date Picker

I have not figured out a way to style the date picker. For all of the other fields, if they are required I am changing the background color.
However, I can't do this with the date field. Please let me know how to use css to do this.

I have tried:

.pc-required .date-value
{
background-color: red;
}

it works for other input types:

.pc-required .input-value
{
background-color: red;
}

see my earlier forum posting: http://www.formsplayer.com/node/643