Shift right click any color switch/button and then select settings then you will see the box for icon. Click the small grey arrow to pick from the color icons. double click the color icon you want to use and the icon list should close and then simply click OK for the switch settings window and you should see the icon now on the switch.
When you block a person, they can no longer invite you to a private message or post to your profile wall. Replies and comments they make will be collapsed/hidden by default. Finally, you'll never receive email notifications about content they create or likes they designate for your content.
Note: if you proceed, you will no longer be following .