For a time, it didn’t look like the Diamondbacks were going to sell out tonight’s Game 4 of the NLDS. But the team’s official Twitter account says tickets sold briskly after Arizona beat Milwaukee Tuesday night:

And what’s this “blackout” they’re talking about? The Diamondbacks have many different uniform color combinations (something many of us who are uniform purists don’t care for), and tonight they will be wearing their black jerseys. So:

And in case you don’t have any such gear, they’re going to help you:

This has been done before, by another team that has black as one of its colors; the Chicago White Sox did it for their 2008 AL Central tiebreaker game against the Twins. Here’s some video from that game:

Like or hate the D’backs and/or their uniforms, an entire stadium dressed in black should look pretty cool. Game time is 9:37 p.m. ET.