Lilac is a free, simple, and clean Tumblr theme that comes with an elegant grid layout. This theme is so customizable that even any new designer can build a beautiful blog in minutes. This theme also comes with the like and reblog buttons right on the home page, which can be accessed just by hovering your mouse over any post. This theme comes with a sidebar where you can even put quite a lengthy description of your blog. If you are looking for a perfect Tumblr theme for your next photography blog or portfolio blog, this theme is worth a try. Not to mention, this theme is fully cross-browser compatible, responsive, and retina ready.