can i just use green to roll a joint

[P.E.N.G.U.I.N.]

I would Say That the only gateway drugs are Alcohol, and [B]Tobacco[B], yet somehow weed got mixed up as being one too.

Yeah, no shit. Most illicit drug users started with cigarettes and alcohol. Not that a worthless statistic really means there's a connection, though.

Stick with the green, and you'll be fine.