diff --git a/src/js/simplemde.js b/src/js/simplemde.js
index dd10840..9228b27 100644
--- a/src/js/simplemde.js
+++ b/src/js/simplemde.js
@@ -856,6 +856,7 @@ SimpleMDE.prototype.render = function(el) {
 	this.codemirror = CodeMirror.fromTextArea(el, {
 		mode: mode,
 		backdrop: backdrop,
+		theme: "paper",
 		tabSize: (options.tabSize != undefined) ? options.tabSize : 2,
 		indentUnit: (options.tabSize != undefined) ? options.tabSize : 2,
 		indentWithTabs: (options.indentWithTabs === false) ? false : true,