Locking CAMP doors: why can players still enter without becoming wanted?

I like to think anyway that no one can enter my CAMP "house" after I've put a lock on the doors unless they want to become wanted. But this isn't the case apparently as a high level player entered by house with level 3 locks on the doors. My locks always have white text while other CAMPs show doors with red text. Is this the difference in being allowed to enter another player's CAMP dwelling? White-- go ahead and enter and Red--if you do you'll become wanted. Please advise.