test_script.lua

-- Description: Duplicate a sprite and replace black with 3 different colors

function createSheet(data, numberOfVariants)
    local sourceSprite = app.activeSprite
    local sourceImage = app.activeCel.image

    Sprite(sourceSprite.width * numberOfVariants, sourceSprite.height)
    local outputImage = app.activeCel.image

    for i = 0, numberOfVariants do
        app.command.ReplaceColor {
            ui = false,
            from = Color(0, 0, 0),
            to = data["color_" .. i],
            tolerance = 0
        }
        outputImage:drawImage(sourceImage, sourceSprite.width * i, 0)
    end

    app.refresh()
end

local data = {
    color_0 = Color(255, 0, 0),
    color_1 = Color(0, 255, 0),
    color_2 = Color(0, 0, 255),
}
createSheet(data, 3)