yes, you can do so using CSS. To do so, go to wp-dashboard > Appearance > Editor and open style.css (opened by default). Add the following code, that should explain itself, and provide some examples you can finetune and tweak:
#menu {
color: black;
background: pink;
}
#menu li a {
color: green;
background: white;
}
#menu li.current_page_item a,
#menu li.current_page_item a:visited {
color: yellow;
background: blue;
}
#menu li a:hover {
color: red;
background: black;
}
Ronald

