I don't think perspective has much to do with it. From what I learned in school they knew it was treason when the colonists decided to no longer be ruled by someone so far away without any kind of representation in parliament. However, it was also decided by those people that the results should they fail were vastly outweighed by the prospects of what they could achieve should they succeed and thus started the revolution. Then again........I once heard in the movie The Count of Monte Cristo "Treason is a matter of dates, and well all is said and done I will be the patriot and you will be the upstart."

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"BOY: On a hot summer night, would you offer your throat to the wolf with the red roses? GIRL: Will he offer me his mouth? BOY: Yes. GIRL: Will he offer me his teeth? BOY: Yes. GIRL: Will he offer me his jaws? BOY: Yes. GIRL: Will he offer me his hunger? BOY: Yes. GIRL: Again, will he offer me his hunger? BOY: Yes! GIRL: Yes. BOY: On a hot summer night, would you offer your throat to the wolf with the red roses? GIRL: Yes. BOY: I bet you say that to all the boys!" -Meatloaf