Feng shui

Increase Yellow Feng Shui to:
-Increase the amount of bells that villagers give you as a reward when you do stuff for them.
-Increase your ability to obtain an 8th bag of money (worth 8,000 bells) from the money rock. A score of 73 "points" seems to be the minimum needed.
-Increase the probability of success of Bell Trees. (While it's known that the amount buried affects the chance of success, yellow Feng Shui might add a bonus % chance as well.)
-Increase the probability that non-counterfeit paintings appear at Redd's.

Increase Red Feng Shui to:
-Increase the probability that Mario Items appear in floating balloon presents.
-Also increase the probability of non-counterfeit paintings appearing at Redd's.
-Increase the chance that "Crazy Redd exclusives" appear at Redd's.

Increase Green Feng Shui to:
-Increase the chance that spotlight items appear at Nook's.
-Increase the chance of non-counterfeit paintings appearing at Redd's.
-Increase the chance that "Crazy Redd exclusives" appear at Redd's.
-Increase the chance to catch a coelacanth

While it seems easy to test some of the yellow benefits , most of the benefits of Feng Shui, including the chance of non-counterfeit paintings appearing at Redd's