Base Color Palette cannot be replaced, only added to

[sekjal]

Since the config system merges the default settings array with the settings array in _config.php, there is no way to replace the colors within the default palette with a complete set of your own; you can rename, and add to, but not replace.

This would be fixed with the migration to the SS 3.1 config system, I'm sure, so probably not worth a separate pull request.

[anselmdk]

Yes, migrating to the SS 3.1 config system should fix it.