The VG Resource

Correct colours:
http://www.spriters-resource.com/ds/fres...eet/20566/
Wrong colours:
http://www.spriters-resource.com/ds/fres...heet/9471/

Since I'm ripping from DS now, I'm just interested how this can happen. I heard the GBA emulator also produces wrong colours if you don't select "poppy bright" or something like that.

GBA emulation uses darker colours, since early GBA units did NOT have a backlight, and game developers used brighter colours to help see the dark screen better. Later GBA games did not do this, due to looking horrible when there is a backlight on.

This is more or less to emulate the lack of backlight.

I'm Assuming DS emulators that emulate GBA games have this feature, too. Hence the colours being more dull on the wrong colours.

This explains why there's an option for poppy bright in the emulators.

But how does it happen with DS-only games like the one I linked before? When I saw the two sheets of the main character and one of them had wrong colours, I was wondering how this is even possible.

The DS has an option to set the brightness of the backlight, so I assume the ripper had it set lower than usual before doing the rips?

I don't know that much of DS emulation, so I'm just going from what I know, hardware wise. That lowering the backlight is emulated by darkening the visuals.

This makes sense. Thanks for clearing that up =)