|Through Jan. 6 / As newspapers vanish, so do their ostentatious front pages. A blog can never rival the giant fonts and arresting images that helped sell old-school papers for 200 years — and you can’t draw on, fold or line birdcages with a newfangled e-pub. Andy Warhol loved to doodle all over his newspapers, and he used press images as a basis for some of his prints. Now you can see how Warhol tampered with editorial layout, thanks to “Warhol: Headlines,”an archival exhibit now showing at (where else?) The Andy Warhol Museum. Colorful and subversive, “Headlines” explores how the great Pop artist responded to daily news.