east texas bloodlines?

The old man that I got my harley gyp from said she came from an old man that stayed in the applesprings area. I just had my secound litter out of her. I bred her with my swag dog. He came out of bobbyb's blade x petra cross. She had 9 pups 4 came out yella with light black masks. And 3 came out black trimmed in yella. Some of you fellas call them reveresed curs. The runt of the litter is charcoal gray kinda blue looking. She is slowly getting some yeall in her face and on her front legs. Kinda odd but I was assured she would turn yella. Said the cross was throwen some old school traits.