Color is a very personal preference. Some of us spend so much time surrounded by vibrant colors at work that we prefer a more subdued and neutral environment at home. Can a moody grey living room like the one shown here have good feng shui? Absolutely! It’s especially auspicious if the room is located in areas of the bagua where greys and blacks are naturally welcome (Travel & Helpful People and Career areas are exceptional placement for greys and blacks).
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In addition to color there are other elements to the design that enhance the feng shui in this room. For example, check out the use of yin-yang shapes in the art work in the photo below. Round yin on top (where we belong, hehe!) and square masculine yang below. No color, but very powerful. The orchids and the rounded vase are also nice compliments to the overall feng shui qi.