black pastel vs cinnamon

Ok how can you tell the difference between a black pastel and a cinnamon.I just got a male cinnamon and want to make sure its a cinnamon and not a black pastel

Black pastels are known to have black squiggles in their alien heads.
Cinnamons don't have these squiggles, but have more blushing

Here's a link that describes and compares both the cinny and black pastel.

These are squiggles:
http://www.nextworldexotics.com/images/cincir1.jpg