[Plugin: Contact Form 7] Input boxes not showing.

Hi there

I have successfully run Contact Form 7 on many sites. On this particular site, the input box borders are the same colour as the background and are not showing (see screencast). http://screencast.com/t/ck6Jv6Err6L

Any suggestions would be appreciated.

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