import { bgRgb24 } from "https://deno.land/x/gauntlet@v0.0.9/imports/mod.ts";
Set background color using 24bit rgb.
color can be a number in range 0x000000 to 0xffffff or
an Rgb.
To produce the color magenta:
bgRgb24("foo", 0xff00ff);
bgRgb24("foo", {r: 255, g: 0, b: 255});