Yeah pretty much this. And it's because Tails was originally orange and not Yellow, his sprites were lazy as hell in Sonic 3, they didn't remodel him like Sonic, they just copypasted his Sonic 2 sprites and used a model for the rotate ones which looked really inconsistent, and Sonic 3's Tails is missing a color, the red color, that made him look more orange than brown. Sonic 3's Tails looked more brown, that's why I say to use Sonic 2's pallet, or give him some red shades so he doesn't suffer from the same problem the new Tails does. I'll get Photoshop when I get home but ATM I don't have access to it. Ir'll make more sense as a picture.