NES Palette

[Shade]

i mean, they dont have limitations on Wii U so they can choose the best colors for Mario, just look Sonic in Mario Maker, that cant be on a real nes...

This in itself is a red flag, though. On the Wii U they don't need to work under the limitations of the original console (NES), so they can alter the palette however they please just because they don't have to abide by the requirements of a dated device, meaning that whatever palette they choose now could very possibly be even further from whatever intended look the sprites were supposed to have on the NES (I'm talking the ACTUAL console, not a virtual console version of the game.)

To reiterate what I said before, there is no better NES palette out there, but at the end of the day it's safer to go with an emulator trying to closely replicate the original system's displayed color scheme than a modern, official console that no longer needs to follow those guidelines to begin with, likely straying even more so from how the sprites should look like on their native hardware.