Adding colors to editor-color-palette.json ?

Hi. I’m trying to figure out how Understrap decides which colors to include in editor-color-palette.json (used to generate the Gutenberg color palette).

It seems like it uses the $colors map if defined in _child_theme_variables.scss but it doesn’t use all of them. If I un-set $colors the default BS colors are used, but if I define it using my color palette: …

$colors: (
    "pink": $pink,
    "purple": $purple,
    "teal": $teal,
    "green": $green,
    "black": $black,
    "white": $white,
    "pink-65": $pink-65,
    "pink-26": $pink-26,
    "pink-10": $pink-10,
    "purple-65": $purple-65,
    "purple-26": $purple-26,
    "purple-10": $purple-10,
    "teal-65": $teal-65,
    "teal-26": $teal-26,
    "teal-10": $teal-10,
    "green-65": $green-65,
    "green-26": $green-26,
    "green-10": $green-10,
);

… it’s only adding the following:

{
    "--bs-pink": "#FB328F",
    "--bs-purple": "#443363",
    "--bs-teal": "#268899",
    "--bs-green": "#15CE20",
    "--bs-white": "#FFF"
}

Why aren’t black, pink-65, pink-26, etc. being included?