How did we figure out more detailed information about the zodiac signs. Such as their favourite colour, their

Question: How did we figure out more detailed information about the zodiac signs. Such as their favourite colour, their horoscope, or their luckiest year?
- Keywords:
  astrology
Asked by GayatriD to Naziyah, Namrah, John, Joanna, Hester, Ed, Adriana on 16 Mar 2021.
- Ed Chester answered on 16 Mar 2021:
  
  People with a lot of imagination made this all up: there is no link between the stars and any of the things you mention. As such, it is not “figured out”!

Question: How did we figure out more detailed information about the zodiac signs. Such as their favourite colour, their horoscope, or their luckiest year?