it truly is. also something i noticed. when you meet chara at the end of the genocide run, theyre wearing a green shirt with a single yellow stripe. But when chara fell on the underground they seemed to be wearing a light colored shirt (yellow?) with a single darker stripe(green?)and asriel was the one wearing a darker colored shirt with a single light colored stripe in the middle (presumably chara's shirt at the end of the geno run)

So maybe they often switched clothing too? i find that cute