Security Markings on Dayi Teas

I recently bought a 2010 Tribution Tuo from Dragon Tea House. The seal did not glow green under the black light. With a 2010 bing this would indicate it was counterfeit. My question is, does anyone know if a tuo cha should also glow green?
http://instagram.com/p/xS5ILazDY2/?modal=true