pokemon platinum pokemon sprites

[Dragoon]

Me and my brother Dragoon actually did a bit of investigation last night since he's always suspicious of any Pokemon sprites that get submitted. We spotted the BG color difference, and then compared some of the colors to find out that Serebii's spriters are actually slightly darker and of a slightly different hue than his, probably some odd setting on his emulator. And about the spacing- I actually checked, and it's a few pixels difference.

It's safe to say that these aren't from Serebii.

Uh
The background and the pokemon are all -10 in each color from serebii, Meaning these ARE stolen and edited to look darker, How in the world else would the guy figure out serebii's BG color?