thedesk/app/js/ui/theme.js

//テーマ適用
function themes(theme) {
	if (!theme) {
		var theme = localStorage.getItem("theme");
		if(!theme){
			var theme="black";
			localStorage.setItem("theme","black");
		}
	}
	$("html").removeClass("indigotheme");
	$("html").removeClass("greentheme");
	$("html").removeClass("browntheme");
	$("html").removeClass("blacktheme");
	$("html").addClass(theme+"theme");
	var font = localStorage.getItem("font");
	if(font){
		$("html").css("font-family",font);
	}else{
		$("html").css("font-family","");
	}
}
themes();