[Plugin: Disqus Comment System] adjust iframe css

Hi folks,

Does anybody know an easy way to adjust the colour of the text within the textarea? It loads in an iframe and I can’t find any easy way to go about changing this single value. It appears to be the only thing which can’t be adjusted.

Cheers,
Rab

http://ww.wp.xz.cn/extend/plugins/disqus-comment-system/