Wouldn't count on anything from petco being het anything. Just because a snake has markings like that on its tail doesn't mean much (at least 3 of mine look just like that and certainly have no pied in them). Was the other listed as a chocolate? The darkness/donut patterns are interesting and could be a sign of it, but I'm still hesitant unless it was labeled as such. Pet stores mostly get their stock from breeder surplus, and I have a hard time thinking a breeder would carelessly let something slip thinking it was just a normal.
That first one kinda looks like a fire but it has no head stamp so im gonna say a good looking light normal and the second dosnt look like a chocalate ive seen, also looks like a really dark normal
Recently a store got in several thousand CH balls from Africa and we were all there dinking around. I picked 4 odd looking ones myself. I am pleasantly surprised by how good eaters they are.
Also, a few friends who has seen one of them kept asking me what morph it was. So fun.
That dark one you have is DEFINITELY worth dinking around with. Looks AWESOME.
One of the first breeding projects I want to work on is developing line bred high contrast albinos. That dark snake could be a step in the right direction.