Réponse courte
Zodiac colours are image and environment hints, not magic buttons.
Table pratique
Rat: black, blue, white. Ox: yellow, brown, beige. Tiger: green, teal, blue. Rabbit: green, pink, light blue. Dragon: yellow, gold, purple, red. Snake: red, purple, green, gold. Horse: red, orange, purple. Goat: beige, yellow, pink. Monkey: white, gold, grey, blue. Rooster: white, gold, beige. Dog: yellow, brown, red. Pig: black, blue, white, silver.
Pourquoi cette lecture
The Year Pillar is close to public image, so colours are useful for clothing, presentation, branding and room atmosphere.
Prudence
Caution colours are not forbidden. The complete chart may need a different element from the year animal.
Ce qu'apporte un rapport complet
A full report reads the Five Elements of the whole chart, not just the year sign.