How to define a favicon for a specific section?

[mateusfccp]

I have the following structure:

.
├── content
│   ├── about
│   │   ├── index.md
│   │   ├── rpg-maker.png
│   │   └── unasp-br.png
│   └── pinto
│       ├── _index.md
│       ├── images
│       │   └── logo.png
│       ├── pinto-v0.0.1-released.md
│       └── the-pinto-programming-language.md
...

I want only my pages under pinto to use a different favicon than the rest of the website.

How may I do it?