Use launcher.conf.json for user color palette configuration

[relic-se]

One caveat of switching to JSON is that it does not support hex integer values. Color values are instead stored as strings which are then converted to integers using int(..., 16).

Here's an example palette configuration within launcher.config.json (I call it "terminal green"):

{
    "palette": {
        "bg": "0x000000",
        "fg": "0x00ff00",
        "arrow": "0x004400",
        "accent": "0x008800"
    }
}

[FoamyGuy]

Thank you! looks good to me. Tested successfully with the green configs from the comment, and default colors with no config.