Please open file ja_templatetools.php inside the template, replace function getUserSetting() with this code
function getUserSetting(){
global $ja_color, $ja_font_size, $ja_width, $ja_menutype, $ja_template_name, $ja_template_absolute_path ;
global $ja_font_size_default, $ja_color_default, $ja_width_default, $ja_tool;
if (isset($_COOKIE['JATheme']) && $_COOKIE['JATheme'] == $ja_template_name){
if (($ja_tool & 2) && isset($_COOKIE['ColorCSS']) && $_COOKIE['ColorCSS']){
$ja_color = $_COOKIE['ColorCSS'];
}
if (($ja_tool & 1) && isset($_COOKIE['ScreenType'])){
$ja_width = $_COOKIE['ScreenType'];
}
if (($ja_tool & 1) && isset($_COOKIE['FontSize'])){
$ja_font_size = $_COOKIE['FontSize'];
}
}else{
$exp = time() + 60*60*24*355;
setcookie ('JATheme', $ja_template_name, $exp, '/');
setcookie ('ColorCSS', $ja_color_default, $exp, '/');
setcookie ('ScreenType', $ja_width_default, $exp, '/');
setcookie ('FontSize', $ja_font_size_default, $exp, '/');
}
if (!is_file("$ja_template_absolute_path/css/colors/$ja_color.css")) $ja_color = $ja_color_default;
}