export type Palette = string | BuiltInPalette | CategoricalPalette | ContinuousPalette;
export type STDPalette = CategoricalPalette | ContinuousPalette;
export type BuiltInPalette = 'spectral' | 'oranges' | 'greens' | 'blues';
export type CategoricalPalette = string[];
export type ContinuousPalette = (ratio: number) => string;