[Plugin: Contact Form 7] Watermark not appearing in form

Hi everyone,
I am using wordpress with the king size theme for http://australiante.com/plan-book/
I have set up a plan & book form but the watermarks are not appearing.
I have added watermarks on the “Skype account name” and the “Skype email address”.
The style.css file of the theme seems to style the form text but there is not entry for the watermarks. How can I add this?
I have also tried altering the contact form stylesheet to make the z-index 20000 and the colour the same but the watermark still does not appear.

This is the end of the style.css from the theme:

.wpcf7-text {
color: #AFAFAF;
z-index: 20000;
}

.contact-form input {
color: #AFAFAF;
z-index: 20000;
}

What would I add for the watermark?
Any suggestions on how to fix this?

http://wordpress.org/extend/plugins/contact-form-7/