Final answer:
The colors in the Address Book have symbolic meanings: gray (neutrality, stability, balance), yellow (happiness, optimism, energy), red (passion, love, strength), and green (growth, renewal, harmony).
Step-by-step explanation:
The colors in the Address Book have symbolic meanings. Gray often represents neutrality, stability, and balance. Yellow can signify happiness, optimism, and energy. Red is commonly associated with passion, love, and strength. Green often represents growth, renewal, and harmony.