We'll have a much better chance of helping you if you give us good shots of the heads and breasts. I've noted below if they are feather sexable or not. If not, you will need to vent sex.
Colours:
1- Egyptian, I think (feather sexable)
2 - Pharaoh (feather sexable)
3 - Falb fee (feather...
I depends on the colour. There are several varieties that are feather sexable, but for those that aren't, you need to vent sex. Males will have a bulge and will produce foam when the bulge is gently pressed.
Here's a video that might help.