Every colour has it’s unique identity.
Your colour can never be better than the other.
Come to think of it white and black are both general colours and they can be used on any other colour. Here you go they have a similarity.
Saying that your colour is better than the other is indirectly saying you think the other colour might be better than yours (Low self-esteem)
White stands for honesty because of its unique way spotting dirts.
Black stands for trustworthiness because it unique way of hiding dirts