▁also ▁recently ▁completed ▁a ▁large ▁digital ▁m ural ▁project ▁for ▁the ▁City ▁of ▁San ▁Jose , ▁CA , ▁fabric ated ▁by ▁SP AR C ▁( So cial ▁and ▁Public ▁Art ▁Resource ▁Center ). ▁ ▁Mart ine z ▁is ▁also ▁a ▁found ing ▁partner ▁of ▁the ▁internet ▁start - up ▁T ap Sm ack . com . ▁ ▁Books ▁In ▁ 2 0 0 9 , ▁Mart ine z ▁wrote ▁the ▁book ▁" G RA FF ▁The ▁Art ▁and ▁Te chni que ▁of ▁Gra ff iti ", ▁published ▁by ▁I MP ACT ▁Books . ▁This ▁book ▁is ▁the ▁first ▁" how - to " ▁for ▁gra ff iti ▁art . ▁The ▁book ▁is ▁a ▁guide ▁on ▁how ▁to ▁create ▁gra ff iti ▁art . ▁Element s ▁of ▁gra ff iti ▁style ▁are ▁presented ▁in ▁sequence , ▁with ▁success ive ▁images ▁showing ▁the ▁development ▁and ▁variations ▁of ▁forms ▁and ▁styles . ▁In ▁ 2 0 1 1 ▁Mart ine z ▁wrote ▁a ▁sequ el , ▁" G ra ff ▁ 2 : ▁Next ▁Level ▁Gra ff iti ▁Te chni ques " ▁as ▁a ▁follow ▁up ▁to ▁the ▁earlier ▁title ▁with ▁more ▁emphas is ▁on ▁developing ▁style ▁as ▁an ▁artist . ▁In ▁ 2 0 1 2 , ▁Mart ine z ▁published ▁a ▁" G ra ff ▁Color ▁Work book " ▁as ▁a ▁follow ▁up . ▁ ▁In ▁ 2 0 1 3 , ▁Mart ine z ▁author ed ▁his ▁fourth ▁book ▁" COL OR MA ST ER ". ▁The ▁book ▁is ▁a ▁break down ▁of