Speckled chicken eggs...?

[alpinefarm]

So...
I've seen Marans and also Welsummer eggs with dark brown speckles. And some green easteregger eggs with olive spots!
I *love* speckled eggs and wonder what breeds commonly lay them?
Anybody actively breeding for spots?

 

[Mahonri]

I have a RIR that gives me dark speckles. It's the bird!