3 week old Runner feathering

[Duchypoo]

I hope my photos are visible? These are my 3 week old Runners which have grown like weeds!!
They are starting to get some feathers now so I'm wondering if they will definitely end up dark khaki/mallard colour ??
Would that mean that they are all female?
I did have a go at vent sexing but couldn't find anything obvious, either because I've not got a clue or because they are female and there was nothing to be found !
Ideas appreciated, thanks x

 

[Duchypoo]

 

[Stipenvlerk]

What a beauties

 

[ibarbidahl]

So- what you have are trout (gray) runners.
Yes, they will have mallard coloring. Brown/black

 

[Isaac 0]

Gorgeous, Gray Runners!