Requesting additional information from @Darksoft and friends to use this CPS-3 palmodding guide by @Maruchan on a board that is equipped with Darksoft Ultra CPS3 SIMM:
Applying Custom Palettes to CPS-3 (3rd strike)
Will explore various routes to get this- social media groups, discords, international websites. If anyone is selling feel free to share what it's worth to you.