100% plastic Modiano Cristallo marked cards single decks are marked by unique luminous ink. These marked cards' quality is the same as original playing cards, extremely playable with high durability, resilience and label sharpness. There are six colors are available: Blue, Red, Brown, Purple, Green, Orange. To indicate suits and numbers of playing cards, our professional technicians print black or white invisible ink markings in the back of the original cards.The color of markings are decided on the color of original playing cards, and you can sent your poker to us for being processed into marked cards as your wishes. Please do feel free to contact with us if you want more detailed information.