Changing Font Color for Service Selection

Hi,

The page we are inquiring about is http://www.anthonymongiello.com/rates/deposit/

On the desktop version it looks good in terms of the text being grey, and background being black.

However on the iphone( iOS) it shows the background as grey and text as grey, so you can't see what it says.

How can we resolve this?

Thanks,
Sheldon