Archetype is a designer-friendly, customizable, responsive tumblr theme. It's flexible, responsive layout will give your tumblr a similar look and feel on your smartphone, desktop and everything in between. Just be sure to deselect "Use optimized mobile layout" under the "Advanced" tab and you're good to go. You can stick with the default settings for a super clean, modern look; or customize to your liking with the appearance menu.
Within Archetype's appearance menu you can:
Designed by Patrick Allen Grady