Red just looks weird unless you have a black belt and your name is Fedor
Keep in mind Fedor wears red because red and blue are the official colors in Sambo. A red jacket (Kurtka) is normal in Sambo. Every Sambist needs to have the 2 colors as in competition there can't be two fighters wearing the same color. So one always wears blue and the other red. Makes it easier for the judges to score too.