When it comes to sexlinks, breed is not a factor. It's entirely based on color/pattern.
Think of it this way, all chickens are genetically either gold/red or silver. Black is not a color, but a pattern. Solid white and 'blue' genes affect black. Solid black and solid white birds are still genetically gold/red or silver but their pattern genes are 'hiding' the base color.
Silver is dominant over red/gold, and is also sex-linked. A silver hen can only pass her silver gene to her male chicks. Males, however, can pass their color gene to both their male and female chicks. This basic principle applies to all breeds and cross breeds.
Black sexlinks are based on the barred pattern gene. A barred hen can only pass her barring gene to her male chicks. Since it's a pattern based sexlink, it doesn't matter what color the rooster is, as long as he isn't solid white.
You rooster is silver, so his chicks can't be sexed by color.
X2 on junebuggena's post.