Yeah, both tangerine AND tricolor are natural wild phenotypes, and many ghosts out there in the market are products of tangerines, only the anery gene makes it impossible to distinguish what it would otherwise be.
The VERY, VERY wide banded ghosts are virtually all "tangerines" if they displayed the absent color and were not void of all red and/or orange pigmentation.
You can get any combination of these colors in a single clutch depending on the parental lineage and further back. Tricolors, tangerines, intermediates, and anything in between are all possible in certain clutches.
those are real nice man!
~Doug
-----
"a snake in the grass is a GOOD thing" 
my website -serpentinespecialties.webs.com