Xtra Sparkle Cello Fun Glitter 10 Colours Sparkle GelPens by Cello (Pack of Two i.e. 20 Pens) Making your assignments sheets and project files colorful and appealing can get you extra marks. Use this pack of 10X02 glitter pens from Cello and make your project reports come alive with colors. 20 Pens Colors include Black, Green, Light Blue, Golden yellow, Orange, Purple, Pink, Dark blue, Grey, Red.