I'll try
Specter:
Mostly complete stripe
Lighter coloration
Less "eyes" in the Alien heads in the side pattern (varies from few to none at the last 1/4 to up to the last 3/4)
Belly pattern for the first ~3/4 is clean with the last 1/4 having some light pattern marks.
I realize this might seem a little vague but I think if you are looking at a clutch as a whole this isn't as difficult a task as people might think. I actually had family members who don't really know snakes look at the clutch and seperate it into piles and they did it right each time. You can see my clutch thread here that might help:
http://www.ball-pythons.net/forums/s...d.php?t=120801
If you are a person who can pick out fires, vanillas, specials, het reds, discos, het sentinals, paints, or yellowbellies out of a clutch then these are cake!
Now using these indicators to see if a normal you have is anything other than a normal? I'd say the only way to do that would be to breed it and see. Just like a "normal" maybe being any one of the subtle morphs listed above.
Just like any of the above morphs, when looking to buy and in doubt about it, buy from a breeder you trust.
Hope that helps