Gintama Takasugi has short black hair with purple highlights (as for Takasugi cosplay, most cosplayers also wear purple wig or black hair) and has his left eye bandaged. There mainly are two anime costumes for this Gintama cosplay; one is the purple yukata (kimono) with yellow butterflies. Another one is the black and purple Joui wars uniform. In addition, Takasugi Shinsuke has a pipe and sword.
In one word, Gintama Takasugi cosplay would make you a real badass easily by dressing the typical anime costume.