allow modified color theme

[rafalBujok]

PR introduces the possibility of using Color or ThemeColor and allowing it to modify.
Here's an example:

const colors = [
  { baseColor: 'accent1', sat: 10, red: 10, blue: 90 },
  { baseColor: 'accent1', sat: 20, red: 20, blue: 80 },
  'accent3',
  'BC71FB',
];

It is an updated code for #954 created by @dimfeld