Weird egg color?

[Whitehouse Quail]

So my silkies finally started to lay! Yaay!

But they are laying brown eggs? The eggs I hatched them from were white. I know they are laying them because they are in a seperate pen... any thoughts?

Thanks!

 

[Elite Silkies]

I have some younger hens that lay darker eggs. The older hens lay a lighter egg. My Lav Hen just started laying again, and they are white.