"The light shines in the darkness, and the darkness has not overcome it." That's John 1:5. The reason all of the shirts are black is because of the world we live in today. We can't deny it. It's dark. Homosexuality is a trend, people are hiding from God. But, that's where we come in. That's why there's a little bit of white on every shirt. We're meant to be the light in the darkness. At school, at work, maybe even at home. Where ever it is, it's your duty to be that light in their lives. Go and show them what our God is made of.
After you read this, I want you to ask God to reveal to you where He wants you to shine. Maybe you already know? Maybe God has already been pushing you there, you just haven't fully realized it yet. Whatever it is, I'm praying that you do amazing things :)