His throat is blue simply because he had drunk poison, which erupted out of The ocean through Samudra Manthan (churning with the ocean). Consequently, he generally wears a cobra about his neck to mitigate the results of your poison. The title Neelkantha (Just one that has a blue throat) is https://vashikaran-totke56555.theideasblog.com/29659935/the-smart-trick-of-shiv-that-nobody-is-discussing