Just joined the forum to hopefully shed some light on this topic. Most people will know me as Tomo from M' Boro, and hello to anyone who does.
I think the original is light blue but also a longer cut. It starts with a piano intro for about 15 - 20 seconds. The second issues or bootlegs (where they legit ?) also came in light blue aswell as the dark green colours. I've had both second issues and both had the intro cut.
The one with the longer intro has "Superdisc" on the run out. Superdisc being the Detroit studio where it was cut.
So i think the answer is in the grooves.
Don't crucify me on my first post if this is not exactly true. Having sold the other two and kept the orig ?, i hope i'm right.
Thanks
Alan T