The point is that "color of car" is a unit of meaning, like "type of woman" (you wouldn't say "type of a woman"), "size of shirt" or "brand of whisky."
Me_IV, please note your typo. You surely meant to type "your favorite color," not "you favorite color." Gustavo's answer concerns the typo-free version.
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 .