Using Feng Shui what is the best shape of the house roof?

Question:Also what is the best color of the main door of the house?

I know chinese recommends red for good luck and to attract success. Hence all chinese restaurants are mostly red inside and out.

Answers:
fengshui is more about concepts and/ or configurations involving degrees in the directions (all 360 of them), than colors, and shapes. colors and shapes are also important, but they just represent the elements of fengshui like fire, water, earth, metal and wood - this is the simpler fengshui. simpler or less powerful stuffs. for example, wavy or shapes that have more curve represents water, triangles or those that have very sharp edges represents fire, etc.

thus, it is more powerful to have your degree right for the facing of your main door than having a red color roofing above you.