diff --git a/src/contents.js b/src/contents.js
index 01f589a..e245ae0 100644
--- a/src/contents.js
+++ b/src/contents.js
@@ -261,6 +261,8 @@ class Contents {
 
 		if (value) {
 			content.style.setProperty(property, value, priority ? "important" : "");
+		} else {
+			content.style.removeProperty(property);
 		}
 
 		return this.window.getComputedStyle(content)[property];
diff --git a/src/themes.js b/src/themes.js
index 5ac94ed..1ec461b 100644
--- a/src/themes.js
+++ b/src/themes.js
@@ -202,6 +202,16 @@ class Themes {
 		});
 	}
 
+	removeOverride (name) {
+		var contents = this.rendition.getContents();
+
+		delete this._overrides[name];
+
+		contents.forEach( (content) => {
+			content.css(name);
+		});
+	}
+
 	/**
 	 * Add all overrides
 	 * @param {Content} content