I absolutely do not know this definitively! I don’t read much DC anymore (at least, not as much as I used to), so admittedly I’m out of touch. I know they changed his skin to red so he could have that connection to The Red for the Rotworld story arc. I assume that this new Teen Titans occurs at a different time or continuity. I’m very confused by it aswell, but for the time being I’m just going to ignore it. Does anyone know if there’s an exact reason for the change, or is it just something we are to shrug off?