Prototype Sonic Palette - RetroKoH/S1Fixed GitHub Wiki

(Original guide by RetroKoH and Ikey Ilex)
Source: See Commit
Original Commit: c38f62d (Incorrect Colors)
Updated Commit: af5be97 (Corrected Colors)
This mod can be toggled in S1Fixed by setting ProtoSonicPalette to 0 or 1.

In Sonic 1, Sonic's standard palette looks like this:
The "proto palette" we will apply looks like this:

As you can see, our focus is on the four shades of blue. If you aren't familiar with palette editing, each palette entry consists of 2 bytes, in the form of 0B GR. 0 is always 0, while the other three characters represent blue, green, and red color components, respectively. These three components can be any of the following values: 0, 2, 4, 6, 8, A, C, or E. With that in mind, here are the color codes for the four shades of blue in Sonic's normal palette:

Blue 1,		Blue 2,		Blue 3,		Blue 4
02 28,		04 4A,		06 6C,		08 8E

The "proto palette" we can use for Sonic, if you so choose, comes from a palette found on some floppy disks owned by former STI member Tom Payne containing developmental assets of Sonic 1. More on this can be found here, courtesy of The Cutting Room Floor. The colors are more saturated than the final palette, and slightly resembles the palette seen in Sonic Mania. Outside of these recovered development files, this palette can also be seen in Sonic CD's Special Stages, as well as in Sonic Crackers. Here is the modified hex code you can use if editing directly or via SonLvl, along with the color values in case you choose to edit with Flex2:

Blue 1,		Blue 2,		Blue 3,		Blue 4
02 2C,		04 4E,		06 6E,		08 8E
(34,34,204)	(68,68,238)	(102,102,238)	(136,136,238)

I would recommend altering level palettes if you plan on using this palette, otherwise Sonic might not pop out quite as much.