Interface AllVariations<T_ColourName, T_ThemeKeyword_Universal, T_ThemeKeyword_Text, T_ThemeKeyword_Background>

interface AllVariations<
    T_ColourName extends string = Default_ColourName,
    T_ThemeKeyword_Universal extends string = never,
    T_ThemeKeyword_Text extends string = never,
    T_ThemeKeyword_Background extends string = never,
> {
    background: { alt: T_ColourName } & { [K in string]: T_ColourName };
    base: T_ColourName;
    heading: {
        "1": T_ColourName;
        "10": T_ColourName;
        "2": T_ColourName;
        "3": T_ColourName;
        "4": T_ColourName;
        "5": T_ColourName;
        "6": T_ColourName;
        "7": T_ColourName;
        "8": T_ColourName;
        "9": T_ColourName;
    } & { [key: number]: T_ColourName };
    interactive: {
        active: T_ColourName;
        disabled: T_ColourName;
        hover: T_ColourName;
    };
    text: { active: T_ColourName; disabled: T_ColourName; grey: T_ColourName } & {
        [K in string]: T_ColourName
    };
    universal: { primary: T_ColourName; secondary: T_ColourName } & {
        [K in string]: T_ColourName
    };
}