My dubias look the same. I also have some whitish colored ones too. Kinda like albinos. Pretty neat looking actually. And yes I think its normal, just different genetics since you want to add in fresh genes every once in awhile so you don't start having inbred hillbilly roaches.
They look fine to me. There's a lot of variation in adult females. I think it's due to what they eat while growing up maybe? I started off with a lot of the darker ones, but have a lot more banded/orange colored roaches now.
My dubias look the same. I also have some whitish colored ones too. Kinda like albinos. Pretty neat looking actually. And yes I think its normal, just different genetics since you want to add in fresh genes every once in awhile so you don't start having inbred hillbilly roaches.
Sorry I cant atm but no they aren't fresh molted. They are just albino like. They aren't as white as a fresh molted one, kind of a dirty blackish white.
I have females like dociledragon posted. I figured that the darker one was older, but how do I know. Here is a neat pic of a molting dubia I caught in action. They are white just after a molt and darken up over the next day or two.