Pretty Printing the structure of nested SASS Maps?

If we have nested maps in SASS (an Angular Theme for example) we can log the contents of it with @debug however it outputs everything in one line.

Anyone know if SASS has something that will pretty print the structure of nested maps?

So for example if we had:

$colors: (
  "primary": (
    "milk":       #fff,
    "cola":       #000,
    "mine-shaft": #232323,
  ),
  "secondary": (
    "pampas":      #f4f1ef,
    "pearl-brush": #e9e2dd,
    "alto":        #ddd,
  ),
);

We could do something like

@recursive-debug $colors

To log the structure of it.