As pointed out by game historian Frank Cifaldi on Twitter, the color palette for the NES-style game isn’t quite right, to the degree that Nintendo itself uses two different color schemes for Mario.

and some additions to help overcome the NES' color palette limitations. Third-parties like Konami, Namco, and Sunsoft also made their own add-on chips, though these were mostly restricted to Japan.

Even with the wider horizontal perspective, Shovel Knight retains an accurate vertical resolution ... used that weren't available in the NES color palette. In addition to the NES' 54 possible ...