Creating a Patina on Brass mods?

One of my mods is brass and I was wondering if it is safe to get a patina going on it? Has anyone done something similar to this? I've been looking at various mod picture threads, and the only patina I've seen are the dull brown looking ones

Brass Fisher with some nice patina : r/pens

Black Forced Patina (Copper, Brass, Bronze) - Way Of Knife & EDC Gear House

Patina 4 Copper Tube Mods With Salt, Baking Soda and Amonia

Weave Mezuzah with Patina - Mezuzah Master

3 Ways to Patina Brass - wikiHow

Build your Woodland Mini Brass Wheel Wax Seal Stamp by Petra

Copper Lip Balm sleeve with force patina

How To Create Faux Patina with PaintEasy!! - Artsy Chicks Rule®

Paint, Patina, Ink: Tea Stain Rose Patina and What It Can Become - Jewelry Making Outside The Box

How to patina a sword

Brass Hidden Folding Lighter Portable Slim Creative Gasoline Cigarette Lighter Men Women

Create a patina on brass