An extra large door leads to financial difficulty, while an extra small door leads to petty arguments.  The front door is the mouth of the chi.  And, remember to replace used up light bulbs.  Or, it will ruin the positive energy.   Size Matters  The size of the door must conform to the size of the house.   Positive Energy Flow  Without any clutter in front or back of the door, the positive flow can easily go inside.  Yellow says friendly and cheerful home owner.   Color Personality  The color of the door tells something about the home owner.  Door should smoothly open and close.  Lastly, the green is simply the color of life.   Make the Guardian happy  The guests must be able to clearly distinguish the front door. .  Think of light as a guardian.  A handsome door brings good health, wealth, and longevity.  A red door symbolizes fame and fortune.  With a properly placed light, the front door tells the direction to go.  Consequently, it may lead to financial loss and illness.  Or, you could be missing potential sales and profit.  Once you are inside, you can see the true color or personality of the home owner.  Fengshui encourages the use of the front or main door.  Additionally, the doorframes are the poles that support the family.  And, blue says introvert and quiet home owner.  A sturdy and straight poles increase the potential fortune.  Passing the front door, you are leaving the outside world.