Which direction is lucky cat?

Excuse me, I'm a bit confused about the direction that the lucky cat is facing. Could you please clarify? Is it supposed to be facing towards the door to bring in good fortune, or away from the door to ward off bad luck? I've heard differing opinions and would like to know the traditional or most commonly accepted practice. Additionally, does the color of the lucky cat make a difference in its supposed effects? I'm quite interested in incorporating this symbol of good luck into my home or office, and want to make sure I'm doing it correctly.