Yep. If your birds are purebred, they will breed true, meaning all babies from purebred stock will also be purebred and look just like SLW, mom and dad :)
Crossing silver and gold, the barring and penciling patterns would get commingled and the chicks would be assorted combinations unless...
If you're asking about SHOW quality, I do believe they would not qualify as "pure breed"... Even though they are both Wyandotte, the coloring would be a " mutt" ish mix.... But selective breeding, you may very well end up with some beautiful coloring, just for your eyes if anything; and that's...