To create additional palettes or modify existing ones, create a json file and place it in the following path in your datapack: data/<pack>/exposure/color_palette/<palette>.json
/exposure palette command has some tools to aid in palette creation.

Example Datapack

Json file has a single property:

• colors: array of strings representing hex value of a color - AARRGGBB.

Example of an "ink" color palette:

{
  "colors": [
    "FF1F1F29", "FF413A42", "FF596070", "FF96A2B3", "FFEAF0D8"
  ]
}

• Palette can have 1-256 colors.
• If a palette has less than 256 colors, internally Exposure will fill the rest with "FF000000" (black).
• Last color in a palette will always be "00000000" (fully transparent)
  • Exposure will add it automatically, if omitted.
  • If palette has 256 colors and last one is not transparent - Exposure will automatically correct it.

To use custom palette, you need to specify it in Film components.