Wyandotte Color Question

Hi everybody,

About a year and a half ago I purchased a single partridge bantam wyandotte hen. Looking back, I wish I purchased a rooster and the other two hens that were avaliable, but unfortunately I didn't and now they're nowhere to be found. All that's avaliable around here are silver laced and white bantams.

So, I put the partridge hen in my silver laced flock and got two hens and a rooster from the crossing of silver laced roo x partridge hen. They are breeding age now, and I was wondering what are the odds of getting a pencilled/partridge offspring from breeding the 3 cross colored offspring and the partridge hen together? Does anybody have any experience with that?