Pages and posts text link colors before and during hover

Do not edit the theme itself. First create a child theme for your changes. Or install a custom CSS plugin.

Do you know how to use CSS?

Do you know how to use CSS?

I’m sorry but it is really beyond the scope of these forums to deal with general CSS issues. Try a dedicated CSS resource such as http://www.css-discuss.org/ instead. In the meantime, try using Firefox with the Firebug add-on for this kind of CSS work. Or use whatever developer tool is available in your web browser.
http://getfirebug.com/