Q. What colors can i use to paint my studio apartment that follow the feng shui pratices?
A. Use light pastel or light earth tones to paint your studio apartment. These colors will make it seem bigger. Avoid rich dark colors, which would make it feel smaller. In a small place it is better to paint the walls with neutral colors and use accent colors in accessories only.

Q. What is the role of Crystals and how these can be used ?
A.You can check the Feng Shui for Us Marketplace. Click on the crystal [s] you are interested in. The use of clear and quartz crystal is stated underneath the pictures. Color crystals are used to enhanced the life areas in home or business.

http://www.fengshuiforus.com/Pages/Marketplace.html#Anchor-35326

Q. How drastically have the principles changed since feng shui was first practiced?
A. Feng Shui is the Ancient Chinese Art of Placement. The first evidence of Feng Shui is found in China as far as 6,000 years ago but it did not acquire coherence as a separate discipline until about 300 AD, when the oldest school developed. There are two major schools of Feng Shui: Form School and Compass School. All other schools stem from either of the original two. The two schools have aspects in which they agree and aspects in which they vary widely.
The oldest school of Feng Shui is called Form School, which is based on the observation of the environment and people's interaction with their surroundings. The system I practice stems from Form School.
Compass School was developed around 1,000 AD and is largely based on Chinese Astrology. Based on a calculation from a person's birth year, four positive and four negative magnetic directions are established, which the person is to seek or avoid.
Both schools have remained pretty consistent throughout the years, except for the incorporation of cultural symbolisms from the different countries where Feng Shui has been assimilated.
In the past 30 to 50 years though, when this art has become more popular in the Western culture two major changes have occurred: one is an ever greater concern with chemical and electromagnetic pollution, as well as a sense of responsibility towards the planet; the other one is the incorporation of so called "New Age" concepts. For example, visualization and manifesting [as metaphysical concepts]
Though there may be many interpretations, the principles of Feng Shui remain unchanged, because they are taken from natural laws.
http://www.fengshuiforus.com/Pages/9PrinciplesofUniversalLaw.html

Q. Is feng shui considered a science, art, superstition or myth?
A. Feng Shui is considered a healing art of space, however its methods are very rigorous. It is important to notice that in traditional Asian culture Medicine is taught as an art, while Painting is taught as a science.
Unfortunately, over the years many superstitious practices have made their way into Feng Shui. The Traditional Chinese definition of healing is as follows: if it makes you free then it is true healing; if it enslaves you, then it is false healing. Superstitions are beliefs that enslave the person.
The same belief or practice may be liberating for one person while it enslaves another. For example, the use of a Buddha statue to enhance the Helpful People area of a person's home and life will be liberating and life affirming for someone who practices the Buddhist faith, but it would be limiting and enslaving for a person of the Catholic faith [who at a conscious or unconscious level believes this practice to be a sin]. That is why I always encourage people to use only the symbols that are part of their own belief system.

Q. How can you see the results?
A. Some of the results in Feng Shui are obvious to the observer. After a Feng Shui process an area will look more wholesome, balanced and harmonious. A chaotic closet will become more organized and less cluttered. Other results are of a subjective nature. Some clients report better sleep, increased ability to concentrate, reduced arguments with mates, etc. More dramatic results reported are monetary windfalls or promotions right after a Feng Shui change was made, or finally finding a love interest after making changes in the bedroom or getting rid of old clothes.