How can I make test black color so it can be seen?

Hi,

Can you please send me CSS code which will make text under the login box located at: http://adamquinter.wpengine.com/wp-login.php?redirect_to=http%3A%2F%2Fadamquinter.wpengine.com%2Fwp-admin%2F&reauth=1 BLACK in color so it can be read. Right now, due to the background I have used, text cannot be read. I know where to put it (into custom login CSS where I did put CSS for background iamge change); I just don't know how to write CSS.