I got the hardware from Rustica hardware. THere are a lot of simple, clean choices.
http://rusticahardware.com/barn-door-hardware/

Thank you so much!

Could you please let me know the paint colors? You have achieved a beautiful balance with the white walls and green door.

At Real Sliding Hardware we sell beautiful barn doors and
sliding barn door hardware. Our quality
is unsurpassed. We design and fabricate
our products in-house and most orders ship out same day. Keep us in mind for your next project!

We sell barn door hardware. Our tracks are very high quality and have many unique features that make our tracks a great choice! Our tracks have an anti-jump piece to keep your tracks in place and a soft stopper at the end so your door isn't slamming into a piece of metal at the end of the track. Our wheels are specially designed to be completely silent and smooth! We can customize you track length and color to fit your needs and are happy to answer any questions you have! Email or visit our website! info@basincustom.com, http://www.basincustom.com