Here you go, dont know why I didnt spot it before.
Code:
.adv a{padding:6px 0 3px;height:20px;display:block;text-align:center;text-decoration:none;background-color:#000000;color: white;}.adv a:hover{background-color:#000000;}.adv a span{display:none;}
I was looking for hex, lol : Change the 'white' to 'black'
Lets see what that does. Maybe font colour , not sure.