8-Bit advice.

[Techokami]

Although later NES games like the Megaman series had sprites (like Megaman) with 5 colours. I'm not entirely sure if Megaman was the only character in his series with 5 colours in his pallete, though.

That was accomplished through having two sprite objects for the player - in the case of Megaman, the face was a separate object that was placed behind the rest of the sprite.

I think Koopaul is trying to avoid using that.