Very early in John Romita, Sr.'s run on Amazing Spider-Man, circa issue #42, Petey buys himself a motorbike, which is first shaded blue.   Within a few issued, he decides to paint it red.  Of course, the chicks dig it, and his popularity soars for the first time in the series. The question is, just how long did this fascination with Pete's motorbike last? This is, from what issue to what issue di…