interface BackgroundFillFreeformGradientimport { type BackgroundFillFreeformGradient } from "https://deno.land/x/grammy@v1.29.0/types.ts"; The background is a freeform gradient that rotates after every message in the chat. Propertiestype: "freeform_gradient"Type of the background fill, always “freeform_gradient” colors: number[]A list of the 3 or 4 base colors that are used to generate the freeform gradient in the RGB24 format