PALETTES = {
    "mono": ["#000000", "#ffffff"],
    "gameboy": ["#0f380f", "#306230", "#8bac0f", "#9bbc0f"],
    "cga": [
        "#000000", "#0000aa", "#00aa00", "#00aaaa",
        "#aa0000", "#aa00aa", "#aa5500", "#aaaaaa",
        "#555555", "#5555ff", "#55ff55", "#55ffff",
        "#ff5555", "#ff55ff", "#ffff55", "#ffffff",
    ],
}