Several posts about it after the fact, bleeding into a second page, about something happening publicly. Too late. Aaaanyhow, in regard to the some of the content already visible here, this confirms a longstanding suspicion of mine, that the fabled "light palette" for Sonic during S1's development was retained and reused almost everywhere Sonic 1 sprites were used again. A few examples include the Mega CD SEGA splash screen, S2 8-bit autodemo "coming soon" screen, 8-bit S2 zone title cards, Eraser, Crackers, Sonic CD time travel sequence, and so on. All*** the art files here appear to use that very same set of blues. ***EDIT: Some of them appear to be using a mix of the final colors alongside the darkest shade of the lighter/more saturated blues, strangely. There are plenty that do use all of the Eraser/Crackers style blues, tending to be what are apparently earlier sprites (such as the front facing pig).