Function defaultMaterialOptions

Returns {
    inner: { color: string; metalness: number; roughness: number };
    primary: {
        color: string;
        effects: { weathering: { resistance: number } };
        metalness: number;
        roughness: number;
    };
    slice: | {
        color: Color;
        effects: { weathering: { resistance: number } };
        metalness: number;
        roughness: number;
    }
    | {
        color: Color;
        effects?: undefined;
        metalness: number;
        roughness: number;
    };
}