Black blessing is characterized by calm atmosphere, which is more common in the scenes used. In China's architectural color culture, black blessing can be compared to positive and changeable colors, avoiding bright colors on white background.
The golden word "Fu" represents the meaning of wealth and light, which is brighter and more gorgeous than the black word, and is suitable for some festive occasions, such as the Spring Festival and weddings.
To sum up, whether the blessing words are gold or black depends on the use environment and personal preferences.