hmm, why do laywers wear black coats? interesting question. I google'd it and the answer is:
The history of the black coat dates back to 17th century
England when robes adopted in 1685 were the symbolic of mourning for King Charles II. It was believed that gowns and wigs gave a degree of anonymity to judges and lawyers.
In India, the Advocate%u2019s Act 1961 makes it mandatory for advocates appearing in the supreme court., high courts, subordinate courts, tribunals or authorities to wear a dress that is sober and dignified.
The dress code is not merely a status symbol, but brings out discipline among lawyers and gives them the confidence to fight for justice. The dress code also differentiates the lawyers from other professionals.
The color black is not touched by this display of colours. It is neutral and above all colors. White neck band represents innocence and purity