[Custom Marker Colors] `Marker colors` option doesn't appear in `Tools`

[kokiriglade]

Getting an error upon installation, probably related:

Uncaught (in promise) TypeError: can't access property "children", Cube.prototype.menu.structure.find(...) is undefined
    onload (Plugin):custom_marker_colors.js:72
    runOnLoad plugin_loader.ts:389
    register plugin_loader.ts:996
    anonymous (Plugin):custom_marker_colors.js:28
    anonymous (Plugin):custom_marker_colors.js:436
    d2 plugin_loader.ts:704
    c2 plugin_loader.ts:694

Idk what else to write -- it just doesn't work

[JannisX11]

@SirJain0