just something i'm working on..

[Rhyme]

if i did that though, the visor would stand out less and it would only make a tiny difference in the grays. i don't like capcom's white anyway XP i don't want there to be a vast difference in colors when the colors are, in my mind, supposed to blend into one another, making a proper shadow. the white is blue hued on MMX cuz his base color was blue to begin with, i feel. = ]

that could be easily fixed by switching out the blues/reds/etc in the sprite for less 'dull' ones

overall honestly your palettes pretty dull

lazily switched to Capcoms grays
and with capcoms blues

not the best examples but i hope you can tell the difference between simply darkening and hue shifting? in yours it's VERY hard (at no zoom) to see the shading.. if you're zoomed in you can tell a lot easier but

you could also use red-gray instead, i guess, if you think it'd match more since your 'base' is mostly red (body, helmet stripe)