Positive:
* The artist's brazen use of color shocked and delighted the audience.
* She had a brazen confidence that made her a natural leader.
Negative:
* The thief's brazen theft of the diamond necklace shocked the city.
* He made a brazen attempt to cheat on the exam.
Neutral:
* The brazen brass band marched down the street, playing a lively tune.
* The brazen sunlight reflected off the windows of the skyscraper.
Remember that "brazen" can have a slightly negative connotation, implying boldness that is perhaps a bit too much or even disrespectful.