Individual bandana colors superfluous to identify Nick Turtles?

[Refractive Reflections]

One noticeable difference with the 2012 Turtles, compared to the other cartoon Turtles (OT and 2K3), is that the 2012 Turtles seem to all have stereotypical physical appearances that match their personalities.

For example, with Leonardo all of his physical features are basically average, and has dark, deep blue eyes.
For Donatello, he's skinny, tall, and has an egg-shaped head.
For Raphael, he's has a more built physique and has green eyes.
For Michelangelo, his youth is shown in his underdeveloped physique compared to his brothers, has innocent light blue eyes, and freckles.

These 2012 Turtles all have physical and facial features which are easily recognizable, unlike the OT Turtles and 2K3 Turtles where they all had the same height, physique, and facial appearance which made their multicolored bandanas more pertinent to easily identify which Turtle was which.

Since these 2012 Turtles are so noticeably different in appearance, does it make the colored bandanas even...necessary now? Yes, I know the multicolored assigned bandanas have now become a tradition, but these obvious physical differences kind of defeats the original purpose of the multicolored bandanas...right? If they didn't wear bandanas at all, or even returned to the original red, I could still identify them easily.

I'm not complaining, or saying that I want them removed/changed, but are these bandanas now... superfluous? What do you think? (Just something to think about.)