My friends are classic all-black offenders (at any given time/event 90% of us are wearing head-to-toe black), so St. Patrick's Day is a good excuse to work in some color—or at least a few green accessories. I went with a Topshop tank with Paige jeans and a Zara leather jacket. I have this tank in three colors and it's an all-time fave—super comfy, flattering, and easy to dress up or down (also now on sale for $15!!). The jeans are also changing my life. I've had them for a week and have …