I wanted to change the list at the top of the Apple page from a horizontal layout to a vertical one. I kept the color change when you scrolled over the buttons but changed it from just turning a darker shade of grey to turning a light blue.
After reading the comments I would change the font to Myriad to match the standard style of font Mac is using on this site. I also agreed with the comment of making the blue a little darker so it is not as drastic a change and allows the white of the text to show up clearer.
http://wd13.johncaserta.info/student/mark_lariviere/syllabus_w_styles.html