In The King Cat of New Bao Qingtian, why did Bao Qingtian change her clothes to red?

According to Jin Chaoqun, the original black color was designed according to the shape of Bao Gong in China's traditional drama, but the purple color in this version is because Bao Gong was originally a descendant of purple stars. Perhaps it is for this reason that he took the lead in boldly changing the color of his clothes. But personally, I think it is acceptable to change the color of this dress.