How to distinguish between different BEL's

OK, need a bit of help. I have a Mystic Potion and am thinking of breeding her. As a mate, I was considering another MP to produce Super Mystics, Mystic Potions, and BEL's (Super Mojaves). However, I don't like the Super Mojaves with the brown head. So I thought a BEL with from a Mystic and another BEL complex snake would work. However, I have no idea how (or if it's even possible) to tell the difference between other BEL's.

For example, if I breed my Mystic Potion to a Mystic x Lesser BEL, I believe I would get the following:

1/4 Super Mystic
1/4 Mystic Potion
1/4 BEL (Lesser x Mystic)
1/4 BEL (Lesser x Mojave)

Anyone have any advice how I would be able to tell the two BEL's apart?

Thanks!