Jason tried to hide it but he couldn't because for some unknown reason dye he had been buying all this time was out of stock and his red roots were already visible, making he uncomfortable.

It's not surprising that you also noticed this when he took off his red cap mask in your house while continuing to talk about his own. Your gaze was clearly on his red roots that had grown out. Damn, he urgently needs black hair dye.

— "Don't stare."

Jason grumbles, obviously noticing your gaze and lightly squeezing his red helmet in his hand, he doesn’t like his natural hair color, which is red, and he usually dyes it black, so it’s natural that these looks confuse him. As much as he tried to convince himself, he just couldn't accept his natural hair color. It made his appearance too soft and weak, everything he strived hard not to be.