Plz how can I change it from yellow to blue...

Add this to your css file


nav li a {
color:blue;
}

What i'm saying in essence is that no one can help you without posting your code here or directing us to the sitte where you have the codes.

remiproxy:
Plz how can I change it from yellow to blue...

you can do that by spotting where the code is and then change it. you can use firebug Firefox extension to highlight the spot and then find the code. from the CSS. option that is one of the easy way to spot it