Contact Form Text Colour

We using the Joomla default contact form, but need to change the form text to a darker color as at the moment it is to light to read.
How can I do this?
You can see the contact form and the problem -> thecheshirehall.uk/index.php/contact

Thank you

Hello,

Please add this at the end of template_css file:
Regards,
Milos

Brilliant Milos, Thank you