Having a specific theme for your wedding is nice, but it's not really necessary. If you just want to keep everything simple and timeless, it would surely make all things easier. You can just pick one or two colors, and that's it.
However, if you want to give your wedding ceremony and reception more personality, you can always look into your and your partner's interests and use them to create a theme. Check out these awesome wedding themes we've found. We hope you find inspiration from them!
The Great Gatsby