I'm new here, hope you guys can help me out.

My boss has OfficeMac 2008 and he uses Excel alot.

The problem he is having is when he clicks any column in excel it does not show the black border of when one is clicked (His eyes aren't working too good).

When he clicks a column nothing is in view to let him know its clicked even though it is (You write something in that column you clicked and it is clicked)

Ive checked preferences, views,etc... and cant seem to fix this problem for him..
I hope you guys understand what im asking.

This is important for being on my boss's good side!!!