how to change hyperlink color ???

Hi,
Platform Wordpress 2.5.1

In my Blog post & Categories web link if i have hyper link[website link] the color is too odd so i need to change its color @ CSS style sheet.

Where to find the code @ CSS style sheet ?????????????

 

I think you would look for something like the following, hope im not wrong:

a:link, a:visited{
text-decoration: underline;
color: #D1A964;
}


a:hover{
text-decoration: none;
color: #C82F1E;
}