Also, how old were yours when they started laying?It looks to me like your rooster is blue rather than splash. Blues do have a gradient and can look very dark. Splash are usually much lighter with darker splashes of color. There are slightly darker splashes too but he doesn't look like one to me.
It's not really possible to predict exactly what you'd get when crossing to your white hen if she is recessive white which most white silkies are. Recessive white eliminates pigment but there is still genetically something underneath and since you can't see it she could be anything under that white (black, blue, splash, partridge, buff, mixed color etc).
If she happened to be dominant white (and given you say she has some brown on her chest I'm wondering about it as dominant white tends to be more leaky) you might get results more similar to what can pop out of paint breeding. If you get any chicks that hatch yellow with black or blue spots she is likely dominant white (and those spotted chicks would be paints, some blue based). If she is carrying partridge you may or may not see it affecting the color of the offspring. The partridge pattern is recessive so you might not see much influence from it in the first generation unless your blue happens to carry partridge as well.
Basically it's really hard to say what you might get. Once you do breed you can better guess at what genetics the parents are carrying based on how the offspring turn out though.
Someone with more experience breeding may be able to answer better, this is just my first year breeding from my own flock of paint silkies.
Ok, thanksMine usually start laying between 6-8 months. Sometimes they can take a bit longer and occasionally they might start just a bit earlier. My latest two that just started laying are just shy of 7 months.
