You are correct about the pos het but the belly "markers" are what I would call pixely like a yellow belly and not the black scales you normaly see with the het pied "markers"; not that means anything just wanted to see what others would say.
I have learned alot from this fourm however I have found this fourm to be very helpfull on one hand and one the other some people are quick to judge the people asking if their snake is a morph. It could have been the way I worded the OP.