Yeah it's possible that it isn't. Of course changing the contrast changes colors too but then you can adjust them back (although at lowest settings you can't use blue and green)

Thanks. I was going for the original metroid look, but I might do some mockups exploring different styles such as metroid 2.

I did not make these.
Metroid 3 with 3 color sprites and 2 wide pixels? Someone made this. It's c64 pallette and 320*200 with 2wide pixels. Sprites in multicolor mode are 3 color.

Edit: This is a 1 bit pixelart. Each tile has its own set of two colors (1 and 0) for the sprites one color is transparent and for the tiles the second color can be any color, so I did multi color tiles. The pixels are 2 by 2 and I'm still using the basic colors.

I really like the newest mockkup, I think it's my favorite so far.

@DJ: Metroid II actually has a hack that colorized it.

Wow looks very good . Also since xLIB will finally not have scanlines support, we'll be stuck in 160x120 so your C64 set will not work. Another thing is that since xLIB supports 256 colors, we could easily re-use the SNES sprite set as it is too.

EDIT: Here are Metroid II: The Last Chozo Expansion Set tiles, by the way, in case anyone would feel like colorizing them (might be a bit hard, since they're all scrambled, but here is the game map in case it's helpful http://illusiat.reubenquest.net/xlib.mtv-music-generator.com_imagesThatWereOn57o9WhereJujuShouldPointTheXlibMTVMGSubdomainToBeforeWeLoseTheGame/metroidmap.gif ):

EDIT 2: I also attached the tiles from the fake Metroid 3: Azimut mockup above (2007 Omni Halloween prank):



Note that those were made with a 8x8 Samus in mind, else it made collision detection too slow for BASIC. There are a few passages that are only 4 pixels high, which requires the morph ball. Some were made by CDI, Dysfunction and Necro, while a few others were ripped from the NES, GB and SNES games.

Well I didn't say I would have to be an actual Metroid 3 game, but rather some sort of Metroid 1 game using Metroid 3 graphics (scaled down by half). Metroid II would be good as well, although if it's for the CSE it should maybe take advantage of the color screen and use more colors than the Gameboy Player rendition of Metroid II.